4/7 minus 3/4 is -5/28
3 4/7 minus 1/7 is 3 3/7
7/9 minus 3/4 is 1/36
7/12 minus 1/3 = 1/4
3/4 minus 1/6 is 7/12
51 minus 27 3/7 = 23 4/7
43 minus 27 3/7 = 15 4/7
3/4 minus 7/8 = -1/8
4/3 minus 3/4 is 7/12.
7 − 43/4 = 21/4
11/3 − 3/4 = 7/12
7/16 - 4/16 = 3/16