Answers

Add 40/90 and 15/90

40/90 + 15/90 is 11/18.

Steps for adding fractions

1. Add the two fractions:
   40/90 + 15/90 = 40 + 15/90 = 55/90
2. 55/90 simplified gives 11/18
3. So, 40/90 + 15/90 = 11/18

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