Answers

Add 80/12 and 21/63

1^st number: 6 8/12, 2^nd number: 21/63

80/12 + 21/63 is 7/1.

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,
   80/12 = 80 × 21/12 × 21 = 1680/252
3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
   21/63 = 21 × 4/63 × 4 = 84/252
4. Add the two like fractions:
   1680/252 + 84/252 = 1680 + 84/252 = 1764/252
5. 1764/252 simplified gives 7/1
6. So, 80/12 + 21/63 = 7/1

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