7-5 1/4=6 4/4-5 1/4=1 3/4
6-5 2/3=5 3/3-5 2/3=1/3
12-9 3/8=11 8/8-9 3/8=2 5/8
11- 6 2/3=10 3/3-6 2/3=4 1/3
8-3 2/7=7 7/7-3 2/7=4 5/7
5 6/13-2=3 6/13
9 3/10-4=5 3/10
2 3/14-1=1 3/14