5/7+1/8=?2/3+5/9=?3/8+7/12=?4/5-3/10=?8/9-5/7=?11/14-21/11=?9/14+5/21=?6/11-3/8=?

问题描述:

5/7+1/8=?2/3+5/9=?3/8+7/12=?4/5-3/10=?8/9-5/7=?11/14-21/11=?9/14+5/21=?6/11-3/8=?
5/6-3/4=?22/27-4/9=?7/20+2/5=?2/3-1/8=?

1.47/56
2.11/9
3.23/24
4.1/2
5.16/63
6.-147/62
7.37/42
8.15/88
9.1/12
10.12/27
11.3/4
12.13/24
望采纳.