Answer:
1. 3/8 + 2/8 = 5/8
2. 4/5 - 3/5 = 1/5
3. 1/4 + 2/4 = 3/4
4. 2/6 + 3/6 = 5/6
5. 3/5 - 2/5 = 1/5
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