八年级解方程练习题和答案

学习 时间:2026-04-08 23:32:32 阅读:2807
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

最佳回答

等待的酸奶

花痴的绿茶

2026-04-08 23:32:32

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+906x=68得出:x=8 经检验,X=8是方程的解

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  • 舒心的冷风
    回复
    2026-04-08 23:32:32

    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+906x=68得出:x=8 经检验,X=8是方程的解

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