1/3 + 2/4 =
12/9 - 2/3 =
7/9 - 2/9 =
3/8 + 5/4 =
22/8 - 20/8 =
2/3 + 3/6 =
3/5 + 4/5 =
6/9
5/9
7/5
13/8
10/12
7/6
2/8
