Addition
2/3 + 1/2
1 1/6 or 7/6
2/3 - 1/2
1/6
2/3 + 4/6 - 3/6
5/6
4/5 + 7/12
1 23/60 or 83/60
4/5 -7/12
13/60
4/5 + 4/10 -2/10
1 or 10/10
2/3 + 4/6 +2/8
1 14/24 or 38/24
2/3 - 4/6 - 2/8
2/8
2/3 + 4/6 - 2/8
1 2/24 or 26/24
9/12 + 2/6
1 1/12 or 13/12
9/12 - 2/6
5/12
9/12 + 2/6 - 5/12
8/12