Answers

Add 90/80 and 21/80

1^st number: 1 10/80, 2^nd number: 21/80

90/80 + 21/80 is 111/80.

Steps for adding fractions

1. Add the two fractions:
   90/80 + 21/80 = 90 + 21/80 = 111/80
2. So, 90/80 + 21/80 = 111/80
   In mixed form: 131/80

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