问题描述:0.75×42.7-0.573×25+53.7怎么计算最佳答案: 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 点击显示答案