Answers

Add 21/84 and 63/27

1^st number: 21/84, 2^nd number: 2 9/27

21/84 + 63/27 is 31/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 27 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 84 × 9 = 756,
   21/84 = 21 × 9/84 × 9 = 189/756
3. Likewise, for the 2nd fraction, since 27 × 28 = 756,
   63/27 = 63 × 28/27 × 28 = 1764/756
4. Add the two like fractions:
   189/756 + 1764/756 = 189 + 1764/756 = 1953/756
5. 1953/756 simplified gives 31/12
6. So, 21/84 + 63/27 = 31/12
   In mixed form: 27/12

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