Adding
4/3 + 2/9
14/9
1/3 - 2/9
1/9
3/2 x 6/13
9/13
5/9 = ?/36
20
6/7 + 5/14
17/14
3/4 - 2/7
17/28
5/6 x 2/11
5/33
4/7 = ?/42
24
2/3 + 4/5
22/15
12/5 - 13/2
41/10
9
5/9 + 6/11
109/99
5/8 - 3/24
1/2
-4 x 3/5
-12/5
-12/11 = ?/55
4 + 16/5
36/5
6 - 2/5
28/5
-12/7 x -10/3
40/7
2/5 = ?/40
16