53 mm - 25 mm = 28 mm
3 over 4 minus 3 over 8 can be simplified by finding a common denominator, which in this case is 8. Rewriting 3 over 4 as 6 over 8, the subtraction becomes 6 over 8 minus 3 over 8, which equals 3 over 8.
4/3 minus (-3/8) is 1 17/24
3/2 minus 1/5 = 1 3/10
3 minus 3/18 is 2 5/6
1 minus 3 over eight =1 * 3/8 minutes= 3/8 minutes
It is 13/72 minus 3/8 = -7/36
1/2 minus 3/7 is 1/14
3/4 minus 1/6 is 7/12
3/6 minus 2/8 is 1/4
7/9 minus 3/4 is 1/36
3/4 minus 1/5 is 11/20
5/6 minus 3/4 is 1/12