Answers

Add 8/21 and 20/21

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

Steps for adding fractions

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

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related: ¹⁶/₂₁+²⁰/₂₁ ⁸/₂₁+⁴⁰/₂₁ ⁸/₄₂+²⁰/₂₁ ⁸/₂₁+²⁰/₄₂ ²⁴/₂₁+²⁰/₂₁ ⁸/₂₁+⁶⁰/₂₁ ⁸/₆₃+²⁰/₂₁ ⁸/₂₁+²⁰/₆₃ ⁴⁰/₂₁+²⁰/₂₁ ⁵⁶/₂₁+²⁰/₂₁

Add Fractions Calculator