Answers

Add 18/42 and 6/63

18/42 + 6/63 is 11/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 63 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 42 × 3 = 126,
   18/42 = 18 × 3/42 × 3 = 54/126
3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
   6/63 = 6 × 2/63 × 2 = 12/126
4. Add the two like fractions:
   54/126 + 12/126 = 54 + 12/126 = 66/126
5. 66/126 simplified gives 11/21
6. So, 18/42 + 6/63 = 11/21

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