13/2 − 5/8 = 47/8 or 57/8
7/11 minus 2/5 is 13/55
13/30
2/3 is.
13 over 45
2 minus 5/6 = 11/6
It is: 5/6 minus 6/13 = 29/78
13/20 minus 3/5 is 1/20
20 over 13
18/20 - 5/20 = 13/20
5/9 minus 3/8 is 13/72
It is: 4/7 minus 5/12 = 13/84
2 minus 2/5 plus 1/2 minus 4 = -1.9