23-53
30
1/4 + 1/4
1/2
50%
-45+12
-33
2/3 + 1/4
11/12
1/3
33.33%
23+10-60
-27
5/10 - 1/5
3/10
1/4
25%
(-5)(6) - 90
-60
-3/12 - 6/36
-5/12
1/8
12.5%
4x2/2xy
2x/y
1/2 + 2/4 + 1/8
9/8
3/5
60%