能简便的简便算

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能简便的简便算
 

原式=5.65×3/5-1.62×3/5
=(5.65-1.62)×3/5
=4.03×0.6
=2.418

原式=5.65X3/5-1.62X3/5
=3/5X(5.65-1.62)
=3/5X4.03
=2.418
望采纳,谢谢

原式=5.65÷(5/3)-1.62×(3/5)
=5.65×(3/5)-1.62×(3/5)
=(5.65-1.62)×(3/5)
=4.03×(3/5)
=2.418