3/4 minus 1/5 is 11/20
It is: 4/5 minus 1/2 = 3/10
4/5 - 1/5 = 3/5
5/6 minus 3/4 is 1/12
1/4 - 5/1= 1/4 - 5= (-4 3/4) by my math
I believe it is 1/30
2 minus 2/5 plus 1/2 minus 4 = -1.9
4/10 - 1/5 = 2/5 - 1/5 = 1/5
5 minus 5/6 is 4 1/6
4/5 - 1/3 = 7/15
4/5 minus 1/3 = 7/15
-1/20