Answers

Add 70/90 and 15/90

70/90 + 15/90 is 17/18.

Steps for adding fractions

1. Add the two fractions:
   70/90 + 15/90 = 70 + 15/90 = 85/90
2. 85/90 simplified gives 17/18
3. So, 70/90 + 15/90 = 17/18

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