It is 13/72 minus 3/8 = -7/36
13/20 minus 3/5 is 1/20
Negative 13 is.
8/13 - 3/13 = 5/13
3/4 minus 1/10 is 13/20
13*3 - 3/3 = 39 - 1 = 38
4/3 minus 5/7 = 13/21
13/20 - 3/15 = 9/20
n - 10 + 9n - 3 = 10n - 13
7 and one third minus 3 and 9 tenths is six and 13 over 30 3 and 13/30
(5 pounds 3 oz) minus (4 pounds 13 oz) = 4 pounds 19 ounces minus 4 pounds 13 ounces = 6 ounces
19/20 minus 3/10 = 13/20