Answers

Add 84/12 and 48/63

1^st number: 7 0/12, 2^nd number: 48/63

84/12 + 48/63 is 163/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 63 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 12 × 21 = 252,
   84/12 = 84 × 21/12 × 21 = 1764/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   48/63 = 48 × 4/63 × 4 = 192/252
4. Add the two like fractions:
   1764/252 + 192/252 = 1764 + 192/252 = 1956/252
5. 1956/252 simplified gives 163/21
6. So, 84/12 + 48/63 = 163/21
   In mixed form: 716/21

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