4(2x-1)-3(x+2)=2(x-9)的检验
人气:325 ℃ 时间:2020-05-10 02:28:14
解答
8x-4-3x-6=2x-18
5x-10=2x-18
3x=-8
x=-8/3
把x=-8/3代入方程的左边
左边=-70/3
右边=2(-8/3-9)=-70/3
左边=右边
所以x=-8/3是方程的解
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