Answers

Add 72/21 and 7/21

1^st number: 3 9/21, 2^nd number: 7/21

72/21 + 7/21 is 79/21.

Steps for adding fractions

1. Add the two fractions:
   72/21 + 7/21 = 72 + 7/21 = 79/21
2. So, 72/21 + 7/21 = 79/21
   In mixed form: 316/21

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