Answers

Subtract 8/14 from 7/20

7/20 - 8/14 is -31/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 14 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   7/20 = 7 × 7/20 × 7 = 49/140
3. Likewise, for the 2nd fraction, since 14 × 10 = 140,
   8/14 = 8 × 10/14 × 10 = 80/140
4. Subtract the two like fractions:
   49/140 - 80/140 = 49 - 80/140 = -31/140

MathStep (Works offline)

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

Related: ¹⁴/₂₀-⁸/₁₄ ⁷/₂₀-¹⁶/₁₄ ⁷/₄₀-⁸/₁₄ ⁷/₂₀-⁸/₂₈ ²¹/₂₀-⁸/₁₄ ⁷/₂₀-²⁴/₁₄ ⁷/₆₀-⁸/₁₄ ⁷/₂₀-⁸/₄₂ ³⁵/₂₀-⁸/₁₄ ⁷/₂₀-⁴⁰/₁₄ ⁷/₂₀-⁸/₇₀ ⁴⁹/₂₀-⁸/₁₄ ⁷/₂₀-⁵⁶/₁₄ ⁷/₂₀-⁸/₉₈

Subtract Fractions Calculator