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(x-22)+(x-24)+(x-27)+(x-20)=x怎么解
人气：240 ℃ 时间：2020-04-29 07:10:39
解答
(x-22)+(x-24)+(x-27)+(x-20)=x
x-22+x-24+x-27+x-20=x
4x-93=x
4x-x=93
3x=93
x=31
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