Answers

Add 54/80 and 21/80

54/80 + 21/80 is 15/16.

Steps for adding fractions

1. Add the two fractions:
   54/80 + 21/80 = 54 + 21/80 = 75/80
2. 75/80 simplified gives 15/16
3. So, 54/80 + 21/80 = 15/16

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