Answers

Add 7/21 and 20/63

7/21 + 20/63 is 41/63.

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,
   7/21 = 7 × 3/21 × 3 = 21/63
3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
   20/63 = 20 × 1/63 × 1 = 20/63
4. Add the two like fractions:
   21/63 + 20/63 = 21 + 20/63 = 41/63
5. So, 7/21 + 20/63 = 41/63

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