Answers

Add 15/84 and 12/84

15/84 + 12/84 is 9/28.

Steps for adding fractions

1. Add the two fractions:
   15/84 + 12/84 = 15 + 12/84 = 27/84
2. 27/84 simplified gives 9/28
3. So, 15/84 + 12/84 = 9/28

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