Answers

Subtract 8/21 from 20/21

20/21 - 8/21 is 4/7.

Steps for subtracting fractions

1. Subtract the two fractions:
   20/21 - 8/21 = 20 - 8/21 = 12/21
2. After reducing the fraction, the answer is 4/7

MathStep (Works offline)

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

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

Subtract Fractions Calculator