Answers

Add 20/63 and 28/48

20/63 + 28/48 is 227/252.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 48 is 1008
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1008
2. For the 1st fraction, since 63 × 16 = 1008,
   20/63 = 20 × 16/63 × 16 = 320/1008
3. Likewise, for the 2nd fraction, since 48 × 21 = 1008,
   28/48 = 28 × 21/48 × 21 = 588/1008
4. Add the two like fractions:
   320/1008 + 588/1008 = 320 + 588/1008 = 908/1008
5. 908/1008 simplified gives 227/252
6. So, 20/63 + 28/48 = 227/252

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