18.6×0.75-0.75×8.6用简便方法计算
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18.6×0.75-0.75×8.6用简便方法计算18.6×0.75-0.75×8.6用简便方法计算18.6×0.75-0.75×8.6用简便方法计算18.6×0.75-0.75×8.6=0.75×（
18.6×0.75-0.75×8.6用简便方法计算
18.6×0.75-0.75×8.6用简便方法计算
18.6×0.75-0.75×8.6用简便方法计算
18.6×0.75-0.75×8.6
=0.75×（18.6-8.6）
=0.75×10
=7.5
这个把0.75提出来就很简单了.祝学习进步!
18.6*0.75-0.75*8.6简便计算,算式
18.6×0.75-0.75×8.6用简便方法计算
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