4 x 2/7
3 x 5/6
7/8 - 5/8
6/12 - 3/12
1/10 + 4/10 + 5/10
5/3 - 4/3
3/9 + 5/9
3/8 +2/8 + 1/8
4/7 -1/7
2 x 4/5
3/12
1
8/5
2/8
3/7
8/9
1/3
15/6
6/8
8/7
