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4分之3×40%+0.75×5分之7(能简算的要简算)
人气:496 ℃ 时间:2019-10-23 02:44:59
解答
4分之3×40%+0.75×5分之7
=0.75×0.4+0.75×1.4
=0.75×(0.4+1.4)
=0.75×1.8
=1.35
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