4 1/2
12 and 1 half minus 3 and 5 6ths = 8 2/3
5/6
1 minus a half is a half.
5/3 minus 1/2 is 1 1/6
It is: 1/2 minus 2/5 = 1/10
5/8 minus 1/2 is 1/8.
1/2 minus 1/5 = 3/10
5 and 6/7 minus 1 and 1/2 = 61/14 or 4 and 5/14
5/6
1 and 7 eighths
5 and 8/10 minus 3 and 1/2 = 2 and 3/10
4/5 minus 1/2 = 3/10