Add: 2 1/10 + 5 7/10 =
7 4/5
Subtract: 6 5/8 - 2 3/8 =
4 1/4
Add: 3 1/4 + 3 5/8 =
6 7/8
Subtract: 8 9/10 - 3 2/3 =
5 7/10
Add: 3 2/3 + 4 1/4 + 6 2/12 =
14 1/2
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