Answers

Add 21/63 and 15/4

1^st number: 21/63, 2^nd number: 3 3/4

21/63 + 15/4 is 49/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 4 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 63 × 4 = 252,
   21/63 = 21 × 4/63 × 4 = 84/252
3. Likewise, for the 2nd fraction, since 4 × 63 = 252,
   15/4 = 15 × 63/4 × 63 = 945/252
4. Add the two like fractions:
   84/252 + 945/252 = 84 + 945/252 = 1029/252
5. 1029/252 simplified gives 49/12
6. So, 21/63 + 15/4 = 49/12
   In mixed form: 41/12

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