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数学
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2-4分之3X-7=-5分之X+17
人气:139 ℃ 时间:2020-01-19 23:17:04
解答
答:
2-4分之3X-7=-5分之X+17
2-(3x-7)/4=-(x+17)/5
两边同乘以20得:
40-15x+35=-4x-68
15x-4x=75+68
11x=143
x=13
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