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1.25*38+1.125*3-5/4 脱式计算
人气:402 ℃ 时间:2020-03-30 20:36:40
解答
=1.25*38+1.25*0.9*3-1.25
=1.25*(38+2.7-1)
=1.25*39.7
=49.625
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