Answers

Add 63/12 and 28/80

1^st number: 5 3/12, 2^nd number: 28/80

63/12 + 28/80 is 28/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 80 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 12 × 20 = 240,
   63/12 = 63 × 20/12 × 20 = 1260/240
3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
   28/80 = 28 × 3/80 × 3 = 84/240
4. Add the two like fractions:
   1260/240 + 84/240 = 1260 + 84/240 = 1344/240
5. 1344/240 simplified gives 28/5
6. So, 63/12 + 28/80 = 28/5
   In mixed form: 53/5

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