4/9 + 5/6 =
5/9 + 7/8 =
3/6 + 1/4 =
1/2 + 2/7 =
2/4 + 1/5 =
2/9 + 3/6 =
2/20 + 1/12 =
7/16 + 2/18 =
1/7 + 2/6 =
2/8 + 1/4 =
7/10
11/60
39/54
103/72
79/144
10/21
1 15/54
1/2
3/4
11/14
