Answers

Add 72/21 and 90/21

1^st number: 3 9/21, 2^nd number: 4 6/21

72/21 + 90/21 is 54/7.

Steps for adding fractions

1. Add the two fractions:
   72/21 + 90/21 = 72 + 90/21 = 162/21
2. 162/21 simplified gives 54/7
3. So, 72/21 + 90/21 = 54/7
   In mixed form: 75/7

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