Answers

Add 20/63 and 15/98

20/63 + 15/98 is 415/882.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 98 is 882
   
   Next, find the equivalent fraction of both fractional numbers with denominator 882
2. For the 1st fraction, since 63 × 14 = 882,
   20/63 = 20 × 14/63 × 14 = 280/882
3. Likewise, for the 2nd fraction, since 98 × 9 = 882,
   15/98 = 15 × 9/98 × 9 = 135/882
4. Add the two like fractions:
   280/882 + 135/882 = 280 + 135/882 = 415/882
5. So, 20/63 + 15/98 = 415/882

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