Answers

Add 63/21 and 54/84

1^st number: 3 0/21, 2^nd number: 54/84

63/21 + 54/84 is 51/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   63/21 = 63 × 4/21 × 4 = 252/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   54/84 = 54 × 1/84 × 1 = 54/84
4. Add the two like fractions:
   252/84 + 54/84 = 252 + 54/84 = 306/84
5. 306/84 simplified gives 51/14
6. So, 63/21 + 54/84 = 51/14
   In mixed form: 39/14

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