Subtracting
3/4-1/4
1/2
4 3/5
23/5
2 + 2/8
2 1/4
3/5= ?/15
9/15
7/14
1/2
10/12-7/12
1/4
2 1/7
15/7
9+ 5/12
9 5/12
6/8=?/4
3/4
4/20
1/5
3-5/8
2 3/8
8 5/6
53/6
3/5 + 3/10=
9/10
3/4=?/44
33/44
4/40
1/10
10 3/7- 3 4/7=
6 6/7
13 1/2
27/2
3/5 + 7/20=
19/20
?/9=20/45
5/9
8/64
1/8
5 2/8- 2 3/8=
2 7/8
11 3/7
80/7
2 3/5+ 4/5=
3 2/5
?/18=2/3
12/18
36/40
9/10