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方乘:X减四分之X=36
怎么算?
人气:451 ℃ 时间:2020-06-08 18:33:07
解答
x - x/4 = 36
x- (1/4)x =36
(3/4) x = 36
x = 36 除 (3/4)
x = 36 * (4/3)
x = 48
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