请帮帮忙。

2025-12-17 14:15:05
推荐回答(1个)
回答1:

3.7×4.5+4.5×5.3
=4.5×(3.7+5.3)
=4.5×9
=40.5

6.7×0.8×0.15×1.25
=6.7×(0.8×1.25)×0.15
=6.7×1×0.15
=1.005