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5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)

来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/10 18:24:46
5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)
求求大家帮个忙,怎么接着道方程啊!
5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x+4)
你题目 校对一下!如果是5x/(x+3)(x+2)+(2x-5)/(x-4)(x+3)=(7x-70)/(x+2)(x-4)那么1/[X+3]*5X/[X+2]+1/[X+3]*[2X-5]/[X-4]=7x-70)/(x+2)(x+4) 1/[X+3]*{5X/[X+2]+[2X-5]/[X-4]}=7x-70)/(x+2)(x+4) 1/[X+3]*{5X*[X-4]+[2X-5]*[X+2]}/[X+2][X-4]=7x-70)/(x+2)(x-4) 1{5X*[X-4]+[2X-5]*[X+2]}/[X+3]=7x-70 5X*[X-4]+[2X-5]*[X+2]=[7X-70][X+3] 5XX-20X+2XX+4X-5X-10=7XX+21X-70X-210 X=-50/7