2⼀3-4⼀7+1⼀3用分数表达等于多少?

2025-04-02 06:09:36
推荐回答(1个)
回答1:

2/3-4/7+1/3
=2/3+1/3-4/7
=1-4/7
=7/7-4/7
=3/7