8/15 - 3/15 = 5/15 or 1/3
8/15 − 1/6 = 33/90 or 11/30
8/15 - 1/3 = 8/15 - 5/15 = 3/15 = 1/5
15 / 24 - 3 / 6 = 5/8 - 1/2 = 5/8 - 4/8 = 1/8
13/15 - 5/15 = 8/15
8/15 minus 7/20 is 11/60
5/8 - 1/3 = 15/24 - 8/24 = 7/24
4/8 minus 1/8 is 3/8.
8/15 − 2/5 = 2/15
4/5 - 8/15 = 12/15 - 8/15 = 4/15
12/8 minus 1/6 is 1 1/3
1/8 - 1/8 = 0