3⼀4-(5⼀7-2⼀5)简便方法?

2025-01-02 14:32:33
推荐回答(2个)
回答1:

3/4-(5/7-2/5)
=3/4-(25/35-14/35)
=3/4-11/35
=105/140-44/140
=61/140
希望采纳,谢谢

回答2:

分数计算
3/4-(5/7-2/5)
=3/4-(25/35-14/35)
=3/4-11/35
=105/140-44/140
=61/140