Question

$maths$
1. 2-3/5
2. 4+7/8
3. 3/5+2/7
4. 9/11-4/15
5. 7/10+2/5+3/2
6. 2,2/3+3,1/2
7. 8,1/2-3,5/8

please answer this question
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Answer 1

Answer:

hope it helps you..............(6,7 can't understand)