这题我不会请把过程写给我谢谢!

2025-03-10 04:19:39
推荐回答(3个)
回答1:

回答2:

3-5/8-3/8
=3-(5/8+3/8)
=3-1
=2

1又8/11-(8/11+2/7)
=1又8/11-8/11-2/7
=1-2/7
=5/7

回答3:

2+3/8+5/8-5/8-3/8
=2

1+8/11-8/11-2/7
=1-2/7
=5/7