Answers

Add 15/21 and 70/63

1^st number: 15/21, 2^nd number: 1 7/63

15/21 + 70/63 is 115/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 63 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 21 × 3 = 63,
   15/21 = 15 × 3/21 × 3 = 45/63
3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
   70/63 = 70 × 1/63 × 1 = 70/63
4. Add the two like fractions:
   45/63 + 70/63 = 45 + 70/63 = 115/63
5. So, 15/21 + 70/63 = 115/63
   In mixed form: 152/63

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