1/8 + 1/4 = 1/8 + 2/8 = 3/8
2/3 - 5/9 = 6/9 - 5/9 = 1/9
1/2 - 5/12 = 6/12 - 5/12 = 1/12
5/12 - 2/9 = 15/36 - 8/36 = 7/36
1/8 + 7/12 = 3/24 + 14/24 = 17/24
3/4 - 1/6 = 18/24 - 4/24 = 14/24 = 7/12
5/9 + 3/4 = 20/36 + 27/36 = 47/36 = 13/12
23/40 - 3/8 = 46/80 - 30/80 = 16/80 = 1/5
9/35 - 3/28 = 72/280 - 15/280 = 57/280
1/8 + 1/4 = 1/8 + 2/8 = 3/8
2/3 - 5/9 = 6/9 - 5/9 = 1/9
1/2 - 5/12 = 6/12 - 5/12 = 1/12
5/12 - 2/9 = 15/36 - 8/36 = 7/36
1/8 + 7/12 = 3/24 + 14/24 = 17/24
3/4 - 1/6 = 18/24 - 4/24 = 14/24 = 7/12
5/9 + 3/4 = 20/36 + 27/36 = 47/36 = 13/12
23/40 - 3/8 = 46/80 - 30/80 = 16/80 = 1/5
9/35 - 3/28 = 72/280 - 15/280 = 57/280