简便计算:12分之7减5分之1的和乘60

2025-04-13 04:14:44
推荐回答(2个)
回答1:

(7/12 - 1/5)× 60
=7/12 × 60 - 1/5 × 60
=35-12
=23

回答2:

12/7X60-5/1X60=35-12=23