3/2 + 3/4 + 2/8 =
1/5 + 3/15 + 2/10 =
4 3/4 - 2 1/2 =
4/3 + 2/6 + 3/12 =
3 3/4 - 2 7/8 =
1 11/12
3/5
7/8
2 1/2
2 1/4