初中数学分式计算题精选

初中 数学 数学高考答题卡模板高考数学答题卡模板三年级数学混合运算测试卷数学作业设计案例新人教版八年级上数学教学计划 分式 计算题 一年级下册数学竖式计算题下载二年级余数竖式计算题 下载乘法计算题下载化工原理计算题下载三年级竖式计算题下载 精选 分式计算题精选 7(化简，其结果是 _________ ( 一(选择题(共2小题) 1((2012•台州)小王乘公共汽车从甲地到相距40千米的乙地办事，然后乘出租车 返回，出租车的平均速度比公共汽车多20千米/时，回来时路上所花时间比去时节省8(化简:= _________ ( 了，设公共汽车的平均速度为x千米/时，则下面列出的方程中正确的是( ) A( B( C( D( 9(化简:= _________ ( 2((2011•齐齐哈尔)分式方程=有增根，则m的值为 ( ) A( 0和3 B( C(1 和,2 D( 1 3 10(化简:= _________ ( 二(填空题(共15小题) 3(计算的结果是 _________ ( 11(若分式方程:有增根，则k= _________ ( 4(若，xy+yz+zx=kxyz，则实数k= _________ 12(方程的解是 _________ ( 2222 5(已知等式:2+=2×，3+=3×，4+=4×，…，10+=10×，(a，b均为 13(已知关于x的方程只有整数解，则整数a的正整数)，则a+b= _________ ( 值为 _________ ( 6(计算(x+y)•= _________ ( 14(若方程有增根x=5，则m= _________ ( strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, and other issues. To establish and perfect the muddle along Bureau staff conduct work regulations, standardize the behavior of personnel. 2. To strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 5)," Hunan province safety supervision and management responsibilities of the provisions on the production (Hunan Zhengban made 2013 No. 4) And resolutely implement the safety production of the party with responsibility, a pair of responsibility. "Two is issued safety production administration and inspection to promote the responsibilities bear safety production supervision departments strictly and effectively assumed responsibility. The three is to establish risk self correction self reporting system for safety in production enterprises, promote the enterprises to implement the main responsibility for production safety is introduced. Four strengthen the county safety production supervision ability construction work, promote safe production responsibility to the grassroots. 3, strict accountability and target management. Adhere to the" who is in charge, who is responsible for the pipe industry must be safe, Guan Sheng production and operation must be safe, pipe business must control security "principle, the implementation of safety The production of "cure." stagnation supervision and leadership responsible system. The safety production of key towns, key enterprises and key problems, by the township government and the Department responsible for the stagnation led the lump sum, to tackle tough. To further increase the production safety index assessment, strictly implement the safety production of the "one vote veto" and the reward system, strengthen the safety incentive and restraint mechanism. (six) the implementation of the work force is not strong. The documents, meeting, long work arrangement, check and supervise the implementation of small, poor implementation of the system, the work is not effective. Some leading cadres sense of purpose, consciousness of the masses is not strong, the ruling " For the people "," the interests of the masses no matter "concept understanding is not in place. The specific work treats with the deployment, a few leading cadres complain that work is too complicated, too much responsibility, the pressure is too large, too much emphasis on the difficulty of the work, such as underground mines to avoid the disaster of" six systems "construction and construction of mechanical ventilation to file the form, forwarding arrangements work, no in-depth mining enterprises to promote the specific work, the increase in the number of files, but the effect is not good, not according to the actual situation of non coal mines in the county, to engage in" across the board ", and the quality 15(若关于x的分式方程无解，则a= _________ ( 24(计算( 16(已知方程的解为m，则经过点(m，0)的一次 函数 excel方差函数excelsd函数已知函数     2 f x m x mx m      2 1 4 2拉格朗日函数pdf函数公式下载 y=kx+3的解析式为 25(解方程:( 26(解方程: _________ ( 17(小明上周三在超市花10元钱买了几袋牛奶，周日再去买时，恰遇超市搞优惠酬 宾活动，同样的牛奶，每袋比周三便宜0.5元，结果小明只比上次多花了2元钱，却 比上次多买了2袋牛奶，若设他上周三买了x袋牛奶，则根据题意列得方程为 27(解方程:=0( _________ ( 三(解答题(共13小题) 28(?解方程:2,=1; 18(计算: ?利用?的结果，先化简代数式(1+)?，再求值( 19(化简:( 29(解方程: 20(A玉米试验田是边长为a米的正方形减去一个边长为1米的正方形蓄水池后余 (1)(2)(下部分，B玉米试验田是边长为(a,1)米的正方形，两块试验田的玉米都收获了 500千克( (1)哪种玉米的单位面积产量高, 30(解方程: 21(化简:= _________ ( (1),=1; (2),=0( 22(化简:(23(计算:( strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, and other issues. To establish and perfect the muddle along Bureau staff conduct work regulations, standardize the behavior of personnel. 2. To strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 5)," Hunan province safety supervision and management responsibilities of the provisions on the production (Hunan Zhengban made 2013 No. 4) And resolutely implement the safety production of the party with responsibility, a pair of responsibility. "Two is issued safety production administration and inspection to promote the responsibilities bear safety production supervision departments strictly and effectively assumed responsibility. The three is to establish risk self correction self reporting system for safety in production enterprises, promote the enterprises to implement the main responsibility for production safety is introduced. Four strengthen the county safety production supervision ability construction work, promote safe production responsibility to the grassroots. 3, strict accountability and target management. Adhere to the" who is in charge, who is responsible for the pipe industry must be safe, Guan Sheng production and operation must be safe, pipe business must control security "principle, the implementation of safety The production of "cure." stagnation supervision and leadership responsible system. The safety production of key towns, key enterprises and key problems, by the township government and the Department responsible for the stagnation led the lump sum, to tackle tough. To further increase the production safety index assessment, strictly implement the safety production of the "one vote veto" and the reward system, strengthen the safety incentive and restraint mechanism. (six) the implementation of the work force is not strong. The documents, meeting, long work arrangement, check and supervise the implementation of small, poor implementation of the system, the work is not effective. Some leading cadres sense of purpose, consciousness of the masses is not strong, the ruling " For the people "," the interests of the masses no matter "concept understanding is not in place. The specific work treats with the deployment, a few leading cadres complain that work is too complicated, too much responsibility, the pressure is too large, too much emphasis on the difficulty of the work, such as underground mines to avoid the disaster of" six systems "construction and construction of mechanical ventilation to file the form, forwarding arrangements work, no in-depth mining enterprises to promote the specific work, the increase in the number of files, but the effect is not good, not according to the actual situation of non coal mines in the county, to engage in" across the board ", and the quality A(0 和3 B( C( 1和,2 D( 1 3 2014寒假初中数学分式计算题精选 考点:分式方程的增根;解一元一次方程( 专题:计算题( 参考答案与试题解析 分析:根据分式方程有增根，得出 x,1=0，x+2=0，求出即可( 解答: 解:?分式方程=有增根， 一(选择题(共2小题) 1((2012•台州)小王乘公共汽车从甲地到相距40千米的乙地办事，然后乘出租车?x,1=0，x+2=0， 返回，出租车的平均速度比公共汽车多20千米/时，回来时路上所花时间比去时节省?x=1，x=,2( 12 两边同时乘以(x,1)(x+2)，原方程可化为x(x+2),(x,1)(x+2)=m， 了，设公共汽车的平均速度为x千米/时，则下面列出的方程中正确的是( ) 整理得，m=x+2， A( B( C( D( 当x=1时，m=1+2=3; 当x=,2时，m=,2+2=0， 当m=0时，分式方程变形为,1=0，此时分式无解，与x=,2矛盾， 考点:由实际问题抽象出分式方程( 专题:压轴题( 故m=0舍去， 分析:根据公共汽车的平均速度为 x千米/时，得出出租车的平均速度为(x+20)千即m的值是3， 故选D( 米/时，再利用回来时路上所花时间比去时节省了，得出分式方程即可( 点评:本题主要考查对分式方程的增根，解一元一次方程等 知识点 高中化学知识点免费下载体育概论知识点下载名人传知识点免费下载线性代数知识点汇总下载高中化学知识点免费下载 的理解和掌握，理 解答:解:设公共汽车的平均速度为 x千米/时，则出租车的平均速度为(x+20)千解分式方程的增根的意义是解此题的关键( 米/时， 二(填空题(共15小题) 根据回来时路上所花时间比去时节省了，得出回来时所用时间为:×， 3(计算的结果是 ( 根据题意得出: =×， 考点:分式的混合运算( 故选:A( 专题:计算题( 点评:此题主要考查了由实际问题抽象出分式方程，本题的关键是把握题意，利用回 分析:根据运算顺序，先对括号里进行通分，给 a的分子分母都乘以a，然后利用分 式的减法法则，分母不变，只把分子相减，进而除法法则，除以一个数等于乘来时路上所花时间比去时节省了，得出方程是解题关键( 2以这个数的倒数，并把a,1分解因式，约分即可得到化简结果( 解答: 解: 2((2011•齐齐哈尔)分式方程=有增根，则m的值为 =?(,) ( ) strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, and other issues. To establish and perfect the muddle along Bureau staff conduct work regulations, standardize the behavior of personnel. 2. To strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 5)," Hunan province safety supervision and management responsibilities of the provisions on the production (Hunan Zhengban made 2013 No. 4) And resolutely implement the safety production of the party with responsibility, a pair of responsibility. "Two is issued safety production administration and inspection to promote the responsibilities bear safety production supervision departments strictly and effectively assumed responsibility. The three is to establish risk self correction self reporting system for safety in production enterprises, promote the enterprises to implement the main responsibility for production safety is introduced. Four strengthen the county safety production supervision ability construction work, promote safe production responsibility to the grassroots. 3, strict accountability and target management. Adhere to the" who is in charge, who is responsible for the pipe industry must be safe, Guan Sheng production and operation must be safe, pipe business must control security "principle, the implementation of safety The production of "cure." stagnation supervision and leadership responsible system. The safety production of key towns, key enterprises and key problems, by the township government and the Department responsible for the stagnation led the lump sum, to tackle tough. To further increase the production safety index assessment, strictly implement the safety production of the "one vote veto" and the reward system, strengthen the safety incentive and restraint mechanism. (six) the implementation of the work force is not strong. The documents, meeting, long work arrangement, check and supervise the implementation of small, poor implementation of the system, the work is not effective. Some leading cadres sense of purpose, consciousness of the masses is not strong, the ruling " For the people "," the interests of the masses no matter "concept understanding is not in place. The specific work treats with the deployment, a few leading cadres complain that work is too complicated, too much responsibility, the pressure is too large, too much emphasis on the difficulty of the work, such as underground mines to avoid the disaster of" six systems "construction and construction of mechanical ventilation to file the form, forwarding arrangements work, no in-depth mining enterprises to promote the specific work, the increase in the number of files, but the effect is not good, not according to the actual situation of non coal mines in the county, to engage in" across the board ", and the quality =• 2222×，3+=3×，4+=4×，…，10+=10×，5((2003•武汉)已知等式:2+=2 = ( (a，b均为正整数)，则a+b= 109 故答案为: 考点:分式的混合运算( 点评:此题考查学生灵活运用通分、约分的 方法 快递客服问题件处理详细方法山木方法pdf计算方法pdf华与华方法下载八字理论方法下载 进行分式的加减及乘除运算，是一道 专题:规律型( 2分析: 基础题(注意运算的结果必须是最简分式( 易得分子与前面的整数相同，分母=分子,1( 解答: 22解:10+=10×中，根据规律可得a=10，b=10,1=99，?a+b=109( 4(若，xy+yz+zx=kxyz，则实数k= 3 点评:此题的关键是找到所求字母相应的规律( 考点:分式的混合运算( 6((1998•河北)计算(x+y)•= x+y ( 专题:计算题( 分析: 分别将去分母，然后将所得两式相加，求出 yz+xz+xy=3xyz，再将xy+yz+zx=kxyz代入即可求出k的值(也可用两式相加考点:分式的混合运算( 求出xyz的倒数之和，再求解会更简单( 专题: 计算题( 解答: 分析:把第一个分式的分母先进行因式分解，再算乘法化简，再算加法即可( 解:若， 解答:解:原式 则++==5， =( yz+2xz+3xy=5xyz;? 点评:此题要注意运算顺序:先算乘法，再算加法;也要注意 y,x=,(x,y)的变++==7， 形( 3yz+2xz+xy=7xyz;? ?+?得，4yz+4xz+4xy=5xyz+7xyz， 7((2011•包头)化简，其结果是 ( 4(yz+xz+xy)=12xyz， ?yz+xz+xy=3xyz ?xy+yz+zx=kxyz， ?k=3( 考点:分式的混合运算( 故答案为:3( 分析:运用平方差公式、平方公式分别将分式分解因式，将分式除法转换成乘法，再 点评:此题主要考查学生对分式的混合运算的理解和掌握，解答此题的关键是先求出 约分化简，通分合并同类项得出最简值( yz+xz+xy=3xyz( strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, and other issues. To establish and perfect the muddle along Bureau staff conduct work regulations, standardize the behavior of personnel. 2. To strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 5)," Hunan province safety supervision and management responsibilities of the provisions on the production (Hunan Zhengban made 2013 No. 4) And resolutely implement the safety production of the party with responsibility, a pair of responsibility. "Two is issued safety production administration and inspection to promote the responsibilities bear safety production supervision departments strictly and effectively assumed responsibility. The three is to establish risk self correction self reporting system for safety in production enterprises, promote the enterprises to implement the main responsibility for production safety is introduced. Four strengthen the county safety production supervision ability construction work, promote safe production responsibility to the grassroots. 3, strict accountability and target management. Adhere to the" who is in charge, who is responsible for the pipe industry must be safe, Guan Sheng production and operation must be safe, pipe business must control security "principle, the implementation of safety The production of "cure." stagnation supervision and leadership responsible system. The safety production of key towns, key enterprises and key problems, by the township government and the Department responsible for the stagnation led the lump sum, to tackle tough. To further increase the production safety index assessment, strictly implement the safety production of the "one vote veto" and the reward system, strengthen the safety incentive and restraint mechanism. (six) the implementation of the work force is not strong. The documents, meeting, long work arrangement, check and supervise the implementation of small, poor implementation of the system, the work is not effective. Some leading cadres sense of purpose, consciousness of the masses is not strong, the ruling " For the people "," the interests of the masses no matter "concept understanding is not in place. The specific work treats with the deployment, a few leading cadres complain that work is too complicated, too much responsibility, the pressure is too large, too much emphasis on the difficulty of the work, such as underground mines to avoid the disaster of" six systems "construction and construction of mechanical ventilation to file the form, forwarding arrangements work, no in-depth mining enterprises to promote the specific work, the increase in the number of files, but the effect is not good, not according to the actual situation of non coal mines in the county, to engage in" across the board ", and the quality 解答: 解答: 解:原式=••(a+2)+ 解:=1,=1, =+ ==( = 点评:此题运算顺序:先除后减，用到了分解因式、约分、合并同类项等知识点( = 10((2008•包头)化简:= ( =( 故答案为: 考分式的混合运算( 点评:本题主要考查分式的混合运算，其中涉及平方差公式、平方公式、约分、通分 点 和合并同类项等知识点( : 专计算题( 题8((2010•昆明)化简:= ( : 分能因式分解的分子或分母要先因式分解，先算小括号里的，再算除法( 考点:分式的混合运算( 析 专题:计算题( : 分析:先把括号里的式子通分，然后把除法运算转化成乘法运算， 最后进行约分( 解解:原式=[,解答: 答解:原式=×=( : 点评:本题主要考查分式的混合运算，注意运算顺序( ]?=?= 9((2009•成都)化简:= ( ×，故答案为( 点此题主要考查分式的化简、约分(对于一般的分式混合运算来讲，其运算顺序与 考点:分式的混合运算( 评整式混合运算一样，是先乘方，再乘除，最后算加减，如果遇括号要先算括号里专题:计算题( : 面的(在此基础上，有时也应该根据具体问题的特活应变，注意方法( 分析:把第二个分式的分子分母先因式分解，再把除法统一成乘法化简，最后算减法( strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, and other issues. To establish and perfect the muddle along Bureau staff conduct work regulations, standardize the behavior of personnel. 2. To strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 5)," Hunan province safety supervision and management responsibilities of the provisions on the production (Hunan Zhengban made 2013 No. 4) And resolutely implement the safety production of the party with responsibility, a pair of responsibility. "Two is issued safety production administration and inspection to promote the responsibilities bear safety production supervision departments strictly and effectively assumed responsibility. The three is to establish risk self correction self reporting system for safety in production enterprises, promote the enterprises to implement the main responsibility for production safety is introduced. Four strengthen the county safety production supervision ability construction work, promote safe production responsibility to the grassroots. 3, strict accountability and target management. Adhere to the" who is in charge, who is responsible for the pipe industry must be safe, Guan Sheng production and operation must be safe, pipe business must control security "principle, the implementation of safety The production of "cure." stagnation supervision and leadership responsible system. The safety production of key towns, key enterprises and key problems, by the township government and the Department responsible for the stagnation led the lump sum, to tackle tough. To further increase the production safety index assessment, strictly implement the safety production of the "one vote veto" and the reward system, strengthen the safety incentive and restraint mechanism. (six) the implementation of the work force is not strong. The documents, meeting, long work arrangement, check and supervise the implementation of small, poor implementation of the system, the work is not effective. Some leading cadres sense of purpose, consciousness of the masses is not strong, the ruling " For the people "," the interests of the masses no matter "concept understanding is not in place. The specific work treats with the deployment, a few leading cadres complain that work is too complicated, too much responsibility, the pressure is too large, too much emphasis on the difficulty of the work, such as underground mines to avoid the disaster of" six systems "construction and construction of mechanical ventilation to file the form, forwarding arrangements work, no in-depth mining enterprises to promote the specific work, the increase in the number of files, but the effect is not good, not according to the actual situation of non coal mines in the county, to engage in" across the board ", and the quality ( = 点评:列方程解应用题的关键步骤在于找相等关系(本题中用到的等量关系是:总金 额=数量×单价( = 三(解答题(共13小题) =( 18((2010•新疆)计算: 点评:本题主要考查分式的混合运算，注意运算顺序，通分、约分是解题的关键( 20((2006•大连)A玉米试验田是边长为a米的正方形减去一个边长为1米的正方 考点:分式的混合运算( 形蓄水池后余下部分，B玉米试验田是边长为(a,1)米的正方形，两块试验田的玉专题:计算题( 米都收获了500千克( 分析:分式的四则运算是整式四则运算的进一步发展，在计算时，首先要弄清楚运算 (1)哪种玉米的单位面积产量高, 顺序，先去括号，再进行分式的乘除( (2)高的单位面积产量是低的单位面积产量的多少倍, 解答: 考点: 分式的混合运算( 解原式= 专题:应用题( 分析:此题要先读懂题意，列出式子，再进行分式的混合运算( = 解答: 222解:(1)A玉米试验田面积是(a,1)米，单位面积产量是千克/米; =x+2( 点评:分式的混合运算中，通分和约分是解题的关键( 222B玉米试验田面积是(a,1)米，单位面积产量是千克/米; 2219((2009•常德)化简:( ?a,1,(a,1)=2(a,1) 22?a,1,0，?0,(a,1),a,1 ?, 考点:分式的混合运算( 专题:计算题( ?B玉米的单位面积产量高; 分析:先把小括号的通分，再把除法统一为乘法，化简即可( 解答: 解:原式= (2)? strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, and other issues. To establish and perfect the muddle along Bureau staff conduct work regulations, standardize the behavior of personnel. 2. To strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 5)," Hunan province safety supervision and management responsibilities of the provisions on the production (Hunan Zhengban made 2013 No. 4) And resolutely implement the safety production of the party with responsibility, a pair of responsibility. "Two is issued safety production administration and inspection to promote the responsibilities bear safety production supervision departments strictly and effectively assumed responsibility. The three is to establish risk self correction self reporting system for safety in production enterprises, promote the enterprises to implement the main responsibility for production safety is introduced. Four strengthen the county safety production supervision ability construction work, promote safe production responsibility to the grassroots. 3, strict accountability and target management. Adhere to the" who is in charge, who is responsible for the pipe industry must be safe, Guan Sheng production and operation must be safe, pipe business must control security "principle, the implementation of safety The production of "cure." stagnation supervision and leadership responsible system. The safety production of key towns, key enterprises and key problems, by the township government and the Department responsible for the stagnation led the lump sum, to tackle tough. To further increase the production safety index assessment, strictly implement the safety production of the "one vote veto" and the reward system, strengthen the safety incentive and restraint mechanism. (six) the implementation of the work force is not strong. The documents, meeting, long work arrangement, check and supervise the implementation of small, poor implementation of the system, the work is not effective. Some leading cadres sense of purpose, consciousness of the masses is not strong, the ruling " For the people "," the interests of the masses no matter "concept understanding is not in place. The specific work treats with the deployment, a few leading cadres complain that work is too complicated, too much responsibility, the pressure is too large, too much emphasis on the difficulty of the work, such as underground mines to avoid the disaster of" six systems "construction and construction of mechanical ventilation to file the form, forwarding arrangements work, no in-depth mining enterprises to promote the specific work, the increase in the number of files, but the effect is not good, not according to the actual situation of non coal mines in the county, to engage in" across the board ", and the quality 专题:计算题( =× 分析:本题的关键是正确进行分式的通分、约分，做除法时要注意先把除法运算转化 为乘法运算，而做乘法运算时要注意先把分子、分母能因式分解的先分解，然 后约分( = 解答: 解:= =( =( ?高的单位面积产量是低的单位面积产量的倍( =1， 点评:此题是一道简单的应用题，学生在利用面积公式列出分式才可化简( 故答案为1( 点评:本题主要考查分式的混合运算，通分、因式分解和约分是解答的关键( 21((2005•南充)化简:= ( 23((1997•南京)计算:( 考点:分式的混合运算( 分析:首先把括号里的式子进行通分，然后把除法运算转化成乘法运算，进行约分化 简( 考点:分式的混合运算( 解答: 专题:压轴题( 解:原式= 分析:先算括号里面的(通分后进行计算)，同时把除法变成乘法，再约分即可( 解答: = 解:原式=[+,]• = =• =,1( =( 点评:本题考查了分式的混合运算的应用，注意运算顺序:先算括号里面的，再算除 点评:分式的四则运算是整式四则运算的进一步发展，在计算时，首先要弄清楚运算 法( 顺序，先去括号，再进行分式的乘除( 24((2012•白下区一模)计算( 22((2002•苏州)化简:( 考点:分式的混 合运算;分式的乘除法;分式的加减法( 考点:分式的混合运算( 专题:计算题( strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, and other issues. To establish and perfect the muddle along Bureau staff conduct work regulations, standardize the behavior of personnel. 2. To strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 5)," Hunan province safety supervision and management responsibilities of the provisions on the production (Hunan Zhengban made 2013 No. 4) And resolutely implement the safety production of the party with responsibility, a pair of responsibility. "Two is issued safety production administration and inspection to promote the responsibilities bear safety production supervision departments strictly and effectively assumed responsibility. The three is to establish risk self correction self reporting system for safety in production enterprises, promote the enterprises to implement the main responsibility for production safety is introduced. Four strengthen the county safety production supervision ability construction work, promote safe production responsibility to the grassroots. 3, strict accountability and target management. Adhere to the" who is in charge, who is responsible for the pipe industry must be safe, Guan Sheng production and operation must be safe, pipe business must control security "principle, the implementation of safety The production of "cure." stagnation supervision and leadership responsible system. The safety production of key towns, key enterprises and key problems, by the township government and the Department responsible for the stagnation led the lump sum, to tackle tough. To further increase the production safety index assessment, strictly implement the safety production of the "one vote veto" and the reward system, strengthen the safety incentive and restraint mechanism. (six) the implementation of the work force is not strong. The documents, meeting, long work arrangement, check and supervise the implementation of small, poor implementation of the system, the work is not effective. Some leading cadres sense of purpose, consciousness of the masses is not strong, the ruling " For the people "," the interests of the masses no matter "concept understanding is not in place. The specific work treats with the deployment, a few leading cadres complain that work is too complicated, too much responsibility, the pressure is too large, too much emphasis on the difficulty of the work, such as underground mines to avoid the disaster of" six systems "construction and construction of mechanical ventilation to file the form, forwarding arrangements work, no in-depth mining enterprises to promote the specific work, the increase in the number of files, but the effect is not good, not according to the actual situation of non coal mines in the county, to engage in" across the board ", and the quality 分析:先把除法变成乘法，进行乘法运算，再根据同分母的分式相加减进行计算即可( 专题:计算题( 解答: 分析: 设=y，则原方程化为y=+2y，解方程求得y的值，再代入=y解:原式=,×， 求值即可(结果需检验( 解答: 解:设=y，则原方程化为y=+2y， =,， 解之得，y=,( =( =,( 当y=,时，有=,，解得x=,( 点评:本题考查可分式的加减、乘除运算的应用，主要考查学生的计算能力，分式的 经检验x=,是原方程的根( 除法应先把除法变成乘法，再进行约分，同分母的分式相加减，分母不变，分 子相加减( ?原方程的根是x=,( 点评:用换元法解分式方程时常用方法之一，它能够把一些分式方程化繁为简，化难 25((2010•孝感)解方程:( 为易，对此应注意总结能用换元法解的分式方程的特点，寻找解题技巧( 考点:解分式方程( 27((2011•龙岗区三模)解方程:=0( 专题:计算题( 分析:本题考查解分式方程的能力 ，因为3,x=,(x,3)，所以可得方程最简公分母 为(x,3)，方程两边同乘(x,3)将分式方程转化为整式方程求解，要注意考点:解分式方程( 检验( 专题:计算题;压轴题( 解答:解:方程两边同乘( x,3)， 分析:观察可得方程最简公分母为 x(x,1)(方程两边同乘x(x,1)去分母转化为 得:2,x,1=x,3， 整式方程去求解( 整理解得:x=2， 解答:解:方程两边同乘 x(x,1)，得 经检验:x=2是原方程的解( 3x,(x+2)=0， 点评:( 1)解分式方程的基本思想是“转化思想”，把分式方程转化为整式方程求解( 解得:x=1( (2)解分式方程一定注意要验根( 检验:x=1代入x(x,1)=0( (3)方程有常数项的不要漏乘常数项( ?x=1是增根，原方程无解( 点评: (1)解分式方程的基本思想是“转化思想”，把分式方程转化为整式方程求解; (2)解分式方程一定注意要验根( 26((2011•衢江区模拟)解方程: 28(?解方程:2,=1; 考点:换元法解分式方程( strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, and other issues. To establish and perfect the muddle along Bureau staff conduct work regulations, standardize the behavior of personnel. 2. To strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 5)," Hunan province safety supervision and management responsibilities of the provisions on the production (Hunan Zhengban made 2013 No. 4) And resolutely implement the safety production of the party with responsibility, a pair of responsibility. "Two is issued safety production administration and inspection to promote the responsibilities bear safety production supervision departments strictly and effectively assumed responsibility. The three is to establish risk self correction self reporting system for safety in production enterprises, promote the enterprises to implement the main responsibility for production safety is introduced. Four strengthen the county safety production supervision ability construction work, promote safe production responsibility to the grassroots. 3, strict accountability and target management. Adhere to the" who is in charge, who is responsible for the pipe industry must be safe, Guan Sheng production and operation must be safe, pipe business must control security "principle, the implementation of safety The production of "cure." stagnation supervision and leadership responsible system. The safety production of key towns, key enterprises and key problems, by the township government and the Department responsible for the stagnation led the lump sum, to tackle tough. To further increase the production safety index assessment, strictly implement the safety production of the "one vote veto" and the reward system, strengthen the safety incentive and restraint mechanism. (six) the implementation of the work force is not strong. The documents, meeting, long work arrangement, check and supervise the implementation of small, poor implementation of the system, the work is not effective. Some leading cadres sense of purpose, consciousness of the masses is not strong, the ruling " For the people "," the interests of the masses no matter "concept understanding is not in place. The specific work treats with the deployment, a few leading cadres complain that work is too complicated, too much responsibility, the pressure is too large, too much emphasis on the difficulty of the work, such as underground mines to avoid the disaster of" six systems "construction and construction of mechanical ventilation to file the form, forwarding arrangements work, no in-depth mining enterprises to promote the specific work, the increase in the number of files, but the effect is not good, not according to the actual situation of non coal mines in the county, to engage in" across the board ", and the quality 要检验( ?利用?的结果，先化简代数式(1+)?，再求值( 解答:解:( 1)方程两边同乘(x,2)(x+1)，得 2(x+1)+x,2=(x,2)(x+1)， 解得， 考点:解分式方程;分 式的化简求值( 专题:计算题( 经检验是原方程的解( 分析:? 观察可得最简公分母为(x,1)，去分母后将分式方程求解(同时对?进行 (2)方程两边同乘(x,1)(x+1)，得 化简，即:(1+)?==x+1，再将?x,1+2(x+1)=1， 解得x=0(经检验x=0是原方程的解( 求得数值代入?求值即可( 点评:( 1)解分式方程的基本思想是“转化思想”，把分式方程转化为整式方程求解( 解答:解: ?方程两边同乘x,1，得 (2)解分式方程一定注意要验根( 2(x,1),1=x,1， (3)分式中有常数项的注意不要漏乘常数项( 解得x=2(经检验x=2是原方程的解( 30(解方程: ?(1+)? (1),=1;(2),=0( =× =x+1( ?当x=2时，原式=2+1=3( 考点: 解分式方程( 点评:解分式方程要注意最简公分母的确定，同时求解后要进行检验; ?中要化简后专题:计算题( 2再代入求值( 分析: (1)由x,1=(x+1)(x,1)，可知最简公分母是(x+1)(x,1); (2)最简公分母是x(x,1)(方程两边都乘最简公分母，可把分式方程转换 29(解方程: 为整式方程求解( 22解答: (1)解:方程两边都乘(x+1)(x,1)，得(x+1)+4=x,1，解得x=,3( (1) 检验:当x=,3时，(x+1)(x,1)?0， ?x=,3是原方程的解( (2)( (2)解:方程两边都乘x(x,1)，得3x,(x+2)=0解得:x=1( 检验:当x=1时x(x,1)?0， ?x=1是原方程的解( 考点:解分式方程( 点评: 当分母是多项式，又能进行因式分解时，应先进行因式分解，再确定最简公分 母(分式方程里单独的一个数和字母也必须乘最简公分母( 专题:计算题( 分析:( 1)观察可得方程最简公分母为(x,2)(x+1); (2)方程最简公分母为(x,1)(x+1);去分母，转化为整式方程求解(结果 strengthen the sense of responsibility, work to solve the lack of decent occupation explain away, conduct problems. To establish the overall concept, eliminate departmentalism. Strict assessment and accountability, to solve the spiritual slack, nianqingpazhong, status quo, and other issues. To establish and perfect the muddle along Bureau staff conduct work regulations, standardize the behavior of personnel. 2. To strengthen the responsibility system. One is the in-depth study and implement the "Hunan provincial Party and government leading cadres Interim Provisions on the work safety of a pair of > (Hunan Office issued 2013 No. 5)," Hunan province safety supervision and management responsibilities of the provisions on the production (Hunan Zhengban made 2013 No. 4) And resolutely implement the safety production of the party with responsibility, a pair of responsibility. "Two is issued safety production administration and inspection to promote the responsibilities bear safety production supervision departments strictly and effectively assumed responsibility. The three is to establish risk self correction self reporting system for safety in production enterprises, promote the enterprises to implement the main responsibility for production safety is introduced. Four strengthen the county safety production supervision ability construction work, promote safe production responsibility to the grassroots. 3, strict accountability and target management. Adhere to the" who is in charge, who is responsible for the pipe industry must be safe, Guan Sheng production and operation must be safe, pipe business must control security "principle, the implementation of safety The production of "cure." stagnation supervision and leadership responsible system. The safety production of key towns, key enterprises and key problems, by the township government and the Department responsible for the stagnation led the lump sum, to tackle tough. To further increase the production safety index assessment, strictly implement the safety production of the "one vote veto" and the reward system, strengthen the safety incentive and restraint mechanism. (six) the implementation of the work force is not strong. The documents, meeting, long work arrangement, check and supervise the implementation of small, poor implementation of the system, the work is not effective. Some leading cadres sense of purpose, consciousness of the masses is not strong, the ruling " For the people "," the interests of the masses no matter "concept understanding is not in place. The specific work treats with the deployment, a few leading cadres complain that work is too complicated, too much responsibility, the pressure is too large, too much emphasis on the difficulty of the work, such as underground mines to avoid the disaster of" six systems "construction and construction of mechanical ventilation to file the form, forwarding arrangements work, no in-depth mining enterprises to promote the specific work, the increase in the number of files, but the effect is not good, not according to the actual situation of non coal mines in the county, to engage in" across the board ", and the quality