Answers

Add 18/21 and 20/21

18/21 + 20/21 is 38/21.

Steps for adding fractions

1. Add the two fractions:
   18/21 + 20/21 = 18 + 20/21 = 38/21
2. So, 18/21 + 20/21 = 38/21
   In mixed form: 117/21

MathStep (Works offline)

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

Related: ³⁶/₂₁+²⁰/₂₁ ¹⁸/₂₁+⁴⁰/₂₁ ¹⁸/₄₂+²⁰/₂₁ ¹⁸/₂₁+²⁰/₄₂ ⁵⁴/₂₁+²⁰/₂₁ ¹⁸/₂₁+⁶⁰/₂₁ ¹⁸/₆₃+²⁰/₂₁ ¹⁸/₂₁+²⁰/₆₃ ⁹⁰/₂₁+²⁰/₂₁

Add Fractions Calculator