Answers

Add 63/84 and 27/15

1^st number: 63/84, 2^nd number: 1 12/15

63/84 + 27/15 is 51/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 15 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   63/84 = 63 × 5/84 × 5 = 315/420
3. Likewise, for the 2nd fraction, since 15 × 28 = 420,
   27/15 = 27 × 28/15 × 28 = 756/420
4. Add the two like fractions:
   315/420 + 756/420 = 315 + 756/420 = 1071/420
5. 1071/420 simplified gives 51/20
6. So, 63/84 + 27/15 = 51/20
   In mixed form: 211/20

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