Answers

Add 63/42 and 20/18

1^st number: 1 21/42, 2^nd number: 1 2/18

63/42 + 20/18 is 47/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 42 × 3 = 126,
   63/42 = 63 × 3/42 × 3 = 189/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   20/18 = 20 × 7/18 × 7 = 140/126
4. Add the two like fractions:
   189/126 + 140/126 = 189 + 140/126 = 329/126
5. 329/126 simplified gives 47/18
6. So, 63/42 + 20/18 = 47/18
   In mixed form: 211/18

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