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简便计算 (72×357+357×28)÷(51×7×4)
人气:131 ℃ 时间:2020-05-21 21:47:27
解答
(72×357+357×28)÷(51×7×4)
=[357×(72+28)]÷(51×7×4)
=357×100÷(51×7×4)
=[357÷(51×7)]×(100÷4)
=1×25
=25
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