72×括号九分之5×4分之3-18分之五反括号用简便方法计算

2025-04-05 02:24:30
推荐回答(1个)
回答1:

72×(5/9×3/4-5/18)
=72×(5/12-5/18)
=72×5/12-72×5/18
=30-20
=10