Answers

Add 72/84 and 21/84

72/84 + 21/84 is 31/28.

Steps for adding fractions

1. Add the two fractions:
   72/84 + 21/84 = 72 + 21/84 = 93/84
2. 93/84 simplified gives 31/28
3. So, 72/84 + 21/84 = 31/28
   In mixed form: 13/28

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