3/5 + 2/5 - 3/5
6/7 - 3/7 + 4/7
7/4 - 3/4 - 1/4
8/5 - 2/5 - 3/5
15/4 - 7/4 + 3/4
13/4 + 2/4 - 10/4
2/5 + 1/5 - 2/5
3/4 + 1/4 - 3/4
1
2/5
1/4
1/5
5/4
3/5
11/4
3/4
