Answers

Add 28/90 and 40/90

28/90 + 40/90 is 34/45.

Steps for adding fractions

1. Add the two fractions:
   28/90 + 40/90 = 28 + 40/90 = 68/90
2. 68/90 simplified gives 34/45
3. So, 28/90 + 40/90 = 34/45

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