15.7×3⼀8+5⼀8×15.7%用简便方法怎么做呀?

2025-03-12 18:52:31
推荐回答(1个)
回答1:

15.7×3/8+5/8×15.7
=15.7×(3/8+5/8)
=15.7×1
=15.7