Answers

Add 70/12 and 63/21

1^st number: 5 10/12, 2^nd number: 3 0/21

70/12 + 63/21 is 53/6.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   70/12 = 70 × 7/12 × 7 = 490/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   63/21 = 63 × 4/21 × 4 = 252/84
4. Add the two like fractions:
   490/84 + 252/84 = 490 + 252/84 = 742/84
5. 742/84 simplified gives 53/6
6. So, 70/12 + 63/21 = 53/6
   In mixed form: 85/6

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