Answers

Subtract 81/20 from 8/24

1^st number: 8/24, 2^nd number: 4 1/20

8/24 - 81/20 is -223/60.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 20 is 120
   
   Next, find the equivalent fraction of both fractional numbers with denominator 120
2. For the 1st fraction, since 24 × 5 = 120,
   8/24 = 8 × 5/24 × 5 = 40/120
3. Likewise, for the 2nd fraction, since 20 × 6 = 120,
   81/20 = 81 × 6/20 × 6 = 486/120
4. Subtract the two like fractions:
   40/120 - 486/120 = 40 - 486/120 = -446/120
5. After reducing the fraction, the answer is -223/60

MathStep (Works offline)

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

Related: ¹⁶/₂₄-⁸¹/₂₀ ⁸/₄₈-⁸¹/₂₀ ⁸/₂₄-⁸¹/₄₀ ⁸/₇₂-⁸¹/₂₀ ⁸/₂₄-⁸¹/₆₀ ⁴⁰/₂₄-⁸¹/₂₀ ⁵⁶/₂₄-⁸¹/₂₀

Subtract Fractions Calculator