Answers

Add 8/63 and 45/21

1^st number: 8/63, 2^nd number: 2 3/21

8/63 + 45/21 is 143/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 21 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 63 × 1 = 63,
   8/63 = 8 × 1/63 × 1 = 8/63
3. Likewise, for the 2nd fraction, since 21 × 3 = 63,
   45/21 = 45 × 3/21 × 3 = 135/63
4. Add the two like fractions:
   8/63 + 135/63 = 8 + 135/63 = 143/63
5. So, 8/63 + 45/21 = 143/63
   In mixed form: 217/63

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