0.75×42.7－0.573×25＋53.7怎么计算

问题描述：

0.75×42.7－0.573×25＋53.7怎么计算

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最佳答案：

0.75×42.7－0.573×25＋57.3
=0.75×42.7-57.3×0.25+57.3
=0.75×42.7+57.3(1-0.25)
=0.75×42.7+0.75×57.3
=0.75×(42.7+57.3)
=75