Question

越快越好1 7.2*61.3+73.8*2.82 1-（16+17）*233.6/8+33.6/871.25*615+3

Answer 1

1,原式=7.2×61.3+4.1×9×2×0.4×7=7.2×61.3+﹙9×2×0.4﹚×﹙4.1×7﹚

=7.2×﹙61.3+28.7﹚=7.2×90=648

2,原式=