1 minus 11/24 is 13/24
22/72 + 3/72 = 25/72
11/12 minus 1/16 is 41/48
11/30 - 1/5 - 1/6 = 0
It is -1/11
1 minus 11/21 = 10/21
2 6/8 - 5/6 = 2 18/24 - 20/24 = 1 24/24 + 18/24 = 1 42/24 - 20/24 = 1 22/24 or 1 11/12
12 minus 11 1/6 is 5/6
19/20 minus 11/12 = 1/30
11/12 minus 7/12 is 1/3
23 and 1/2
3/4 minus 1/5 is 11/20
1/2 minus 5/32 is 11/32