87x3⼀86用简便算法

救命提
2024-11-19 08:18:14
推荐回答(2个)
回答1:

87x3/86
=(86+1)x3/86
=86x3/86+1x3/86
=3+3/86
=3又3分之86

回答2:

87x3/86
=(86+1)x3/86
=86x3/86+1x3/86
=3+3/86