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(72*357+357*58)/(51*7*4) 简便计算
人气:339 ℃ 时间:2020-05-23 11:26:36
解答
(72*357+357*58)/(51*7*4)
=357*(72+58)/(51*7*4)
=51*7*130/(51*7*4)
=130/4
=65/2
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