Answers

Add 9/21 and 15/21

9/21 + 15/21 is 8/7.

Steps for adding fractions

1. Add the two fractions:
   9/21 + 15/21 = 9 + 15/21 = 24/21
2. 24/21 simplified gives 8/7
3. So, 9/21 + 15/21 = 8/7
   In mixed form: 11/7

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