Answers

Add 21/90 and 70/90

21/90 + 70/90 is 91/90.

Steps for adding fractions

1. Add the two fractions:
   21/90 + 70/90 = 21 + 70/90 = 91/90
2. So, 21/90 + 70/90 = 91/90
   In mixed form: 11/90

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