Answers

Add 20/63 and 49/42

1^st number: 20/63, 2^nd number: 1 7/42

20/63 + 49/42 is 187/126.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 63 × 2 = 126,
   20/63 = 20 × 2/63 × 2 = 40/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   49/42 = 49 × 3/42 × 3 = 147/126
4. Add the two like fractions:
   40/126 + 147/126 = 40 + 147/126 = 187/126
5. So, 20/63 + 49/42 = 187/126
   In mixed form: 161/126

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