1 over 7 minus 28 over 28 = -168/196 which reduces to -6/7
63/28 - 4/28 = 59/28
4/7 minus 3/4 is -5/28
41/7 - 25/28 = 164/28 - 25/28 = 139/28 = 427/28
6 over 7 minus 5 over 7 is 1 over 7.
4/7 minus 2/8 = 9/28 in its simplest form
1/2 minus 3/7 is 1/14
7/12 minus 1/3 = 1/4
213/532
3 4/7 minus 1/7 is 3 3/7
28 divided by 7 is 4. SO 63 minus 4 = 59
24
9/10 minus 7/8 is 1/40