[1-(1⼀4 2⼀5)]÷3.5的简便方法?

2024-11-25 20:08:20
推荐回答(1个)
回答1:

[1-(1/4+ 2/5)]÷3.5
=(1-0.25-0.4)÷3.5
=0.35÷3.5
=0.1