Answers

Add 1/18 and 21/63

1/18 + 21/63 is 7/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 63 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   1/18 = 1 × 7/18 × 7 = 7/126
3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
   21/63 = 21 × 2/63 × 2 = 42/126
4. Add the two like fractions:
   7/126 + 42/126 = 7 + 42/126 = 49/126
5. 49/126 simplified gives 7/18
6. So, 1/18 + 21/63 = 7/18

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