Answers

Add 8/21 and 28/21

1^st number: 8/21, 2^nd number: 1 7/21

8/21 + 28/21 is 12/7.

Steps for adding fractions

1. Add the two fractions:
   8/21 + 28/21 = 8 + 28/21 = 36/21
2. 36/21 simplified gives 12/7
3. So, 8/21 + 28/21 = 12/7
   In mixed form: 15/7

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