87乘以86之3用简便运算怎么算

2024-12-03 05:18:16
推荐回答(2个)
回答1:

87×3/86=(86+1)×3/86
=86×3/86+1×3/86
=3+3/86
=3又3/86

回答2:

87*3/86
=(86+1)*3/86
=3+3/86
=3又3/86