问题描述: 解方程 X除以(X-2) + (X-9)除以(X-7) = (X+1)除以(X-1) +(X-8)除以(X-6) 1个回答 分类:数学 2014-10-03 问题解答: 我来补答 X除以(X-2) + (X-9)除以(X-7) = (X+1)除以(X-1) +(X-8)除以(X-6)(x-2+2/x-2)+(x-7-2/x-7)=(x-1+2/x-1)+(x-6-2/x-6)1+(2/x-2)+1-(2/x-7)=1+(2/x-1)+1-(2/x-6)(1/x-2)-(1/x-7)=(1/x-1)-(1/x-6)(1/x-2)+(1/x-6)=(1/x-7)+(1/x-1)x-6+x-2/(x-2)(x-6)=x-1+x-7/(x-1)(x-7)2x-8/(x-2)(x-6)=2x-8/(x-1)(x-7)2x-8=0x=4 展开全文阅读