问题描述:75x42.7+57.3-0.573x25)/3x7972=?最佳答案: (0.75×42.7+57.3-57.3×100×0.25)÷3×7972=0.75*(42.7+57.3)÷3×4×1993=25×4×1993=199300 点击显示答案