Answers

Add 36/4 and 21/80

1^st number: 9 0/4, 2^nd number: 21/80

36/4 + 21/80 is 741/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 4 × 20 = 80,
   36/4 = 36 × 20/4 × 20 = 720/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   21/80 = 21 × 1/80 × 1 = 21/80
4. Add the two like fractions:
   720/80 + 21/80 = 720 + 21/80 = 741/80
5. So, 36/4 + 21/80 = 741/80
   In mixed form: 921/80

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