Answers

Add 6/63 and 21/49

6/63 + 21/49 is 11/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 49 is 441
   
   Next, find the equivalent fraction of both fractional numbers with denominator 441
2. For the 1st fraction, since 63 × 7 = 441,
   6/63 = 6 × 7/63 × 7 = 42/441
3. Likewise, for the 2nd fraction, since 49 × 9 = 441,
   21/49 = 21 × 9/49 × 9 = 189/441
4. Add the two like fractions:
   42/441 + 189/441 = 42 + 189/441 = 231/441
5. 231/441 simplified gives 11/21
6. So, 6/63 + 21/49 = 11/21

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