Answers

Add 7/63 and 21/63

7/63 + 21/63 is 4/9.

Steps for adding fractions

1. Add the two fractions:
   7/63 + 21/63 = 7 + 21/63 = 28/63
2. 28/63 simplified gives 4/9
3. So, 7/63 + 21/63 = 4/9

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