Answers

Add 20/21 and 7/21

20/21 + 7/21 is 9/7.

Steps for adding fractions

1. Add the two fractions:
   20/21 + 7/21 = 20 + 7/21 = 27/21
2. 27/21 simplified gives 9/7
3. So, 20/21 + 7/21 = 9/7
   In mixed form: 12/7

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