Answers

Add 1/21 and 63/12

1^st number: 1/21, 2^nd number: 5 3/12

1/21 + 63/12 is 445/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   1/21 = 1 × 4/21 × 4 = 4/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   63/12 = 63 × 7/12 × 7 = 441/84
4. Add the two like fractions:
   4/84 + 441/84 = 4 + 441/84 = 445/84
5. So, 1/21 + 63/12 = 445/84
   In mixed form: 525/84

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