Answers

Add 9/63 and 5/21

9/63 + 5/21 is 8/21.

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,
   9/63 = 9 × 1/63 × 1 = 9/63
3. Likewise, for the 2nd fraction, since 21 × 3 = 63,
   5/21 = 5 × 3/21 × 3 = 15/63
4. Add the two like fractions:
   9/63 + 15/63 = 9 + 15/63 = 24/63
5. 24/63 simplified gives 8/21
6. So, 9/63 + 5/21 = 8/21

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