6又2⼀5减括号3⼀4 2⼀5括号?

2025-02-27 08:18:34
推荐回答(1个)
回答1:

6又2/5-(3/4-2/5)
=6又2/5-3/4-2/5
=6又2/5-2/5-3/4
=6-3/4
=5又1/4