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数学
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解方程3/4X=X-1/2 没负多少!
人气:438 ℃ 时间:2020-05-13 19:51:00
解答
3/4X=X-1/2
解 3/4X-x=-1/2
-1/4x=-1/2
x=-1/2*(-4)
x=2
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