Answers

Add 15/4 and 84/4

1^st number: 3 3/4, 2^nd number: 21 0/4

15/4 + 84/4 is 99/4.

Steps for adding fractions

1. Add the two fractions:
   15/4 + 84/4 = 15 + 84/4 = 99/4
2. So, 15/4 + 84/4 = 99/4
   In mixed form: 243/4

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