Answers

Add 20/21 and 8/21

20/21 + 8/21 is 4/3.

Steps for adding fractions

1. Add the two fractions:
   20/21 + 8/21 = 20 + 8/21 = 28/21
2. 28/21 simplified gives 4/3
3. So, 20/21 + 8/21 = 4/3
   In mixed form: 11/3

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