八年级解方程练习题和答案妹妹的作业我做不出来 麻烦大家会做的把过程和答案写出来1/(x-10)+1/(x-6)=1/(x-9)+1/(x-7)这下题目清楚了吧

Question

八年级解方程练习题和答案
妹妹的作业我做不出来 麻烦大家会做的把过程和答案写出来
1/(x-10)+1/(x-6)=1/(x-9)+1/(x-7)
这下题目清楚了吧

Answer 1

1/(x-10)+1/(x-6)=1/(x-7)+1/(x-9)
1/(x-10)-1/(x-9)=1/(x-7)-1/(x-6)
[(x-9)-(x-10)]/(x-10)(x-9)=[(x-6)-(x-7)]/(x-7)(x-6)
即是
1/（x-9)(x-10)=1/(x-6)(x-7)
x^2-13x+42=x^2-19x+90
6x=68
得出：x=8
经检验,X=8是方程的解