Answers

Add 70/90 and 21/90

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

Steps for adding fractions

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

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