Answers

Subtract 4/24 from 7/21

7/21 - 4/24 is 1/6.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 24 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 21 × 8 = 168,
   7/21 = 7 × 8/21 × 8 = 56/168
3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
   4/24 = 4 × 7/24 × 7 = 28/168
4. Subtract the two like fractions:
   56/168 - 28/168 = 56 - 28/168 = 28/168
5. After reducing the fraction, the answer is 1/6

MathStep (Works offline)

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

Related: ¹⁴/₂₁-⁴/₂₄ ⁷/₂₁-⁸/₂₄ ⁷/₄₂-⁴/₂₄ ⁷/₂₁-⁴/₄₈ ⁷/₂₁-¹²/₂₄ ⁷/₆₃-⁴/₂₄ ⁷/₂₁-⁴/₇₂ ³⁵/₂₁-⁴/₂₄ ⁷/₂₁-²⁰/₂₄ ⁴⁹/₂₁-⁴/₂₄ ⁷/₂₁-²⁸/₂₄

Subtract Fractions Calculator