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||. Add or subtract the following fractions. Reduce your answer to lowest terms if possible.
1. 3 1/4 + 3 5/8 =
2. 9 9/10 + 2 2/5 =
3.5 2/8 + 2 4/10 =
4. 8 2/4 + 7 2/3 =
5. 5 5/6 - 3 1/4 =
6. 9 3/4 - 7 3/6
7. 8 9/10 - 7 2/5 =
8. 12 5/6 - 10 4/9
9. 11 5/7 - 8 3/5​