Answers

Add 20/63 and 28/63

20/63 + 28/63 is 16/21.

Steps for adding fractions

1. Add the two fractions:
   20/63 + 28/63 = 20 + 28/63 = 48/63
2. 48/63 simplified gives 16/21
3. So, 20/63 + 28/63 = 16/21

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