8/9 minus 5/9 is 1/3
9/10 minus 7/8 is 1/40
It is: 8/9 minus 4/9 = 4/9
16/18 - 9/18 = 7/18
6 and 1/4
8/9 minus 7/12 is 11/36
9 - 8 = 1
97/8 − 51/4 = 45/8
(7/8) - (3/8) / (9/1) = (7/8) - (3/8)*(1/9) = (7/8) - (1/24) = 21/24 - 1/24 = 20/24 = 5/6
9 - 1 = 8
9
That is the same as 16/18 - 9/18 = 7/18