5.6×0.375+0.375×5.4-37.5%
=(5.6+5.4-1)×37.5%
=10×37.5%
=3.75
简便算法 5.6×0.375+0.375×5.4-37.5%
简便算法 5.6×0.375+0.375×5.4-37.5%
数学人气：212 ℃时间：2020-04-04 15:26:20
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