Answers

Subtract 9/81 from 3/24

3/24 - 9/81 is 1/72.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 24 and 81 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 24 × 27 = 648,
   3/24 = 3 × 27/24 × 27 = 81/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   9/81 = 9 × 8/81 × 8 = 72/648
4. Subtract the two like fractions:
   81/648 - 72/648 = 81 - 72/648 = 9/648
5. After reducing the fraction, the answer is 1/72

MathStep (Works offline)

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

Related: ⁶/₂₄-⁹/₈₁ ³/₂₄-¹⁸/₈₁ ³/₄₈-⁹/₈₁ ⁹/₂₄-⁹/₈₁ ³/₂₄-²⁷/₈₁ ³/₇₂-⁹/₈₁ ¹⁵/₂₄-⁹/₈₁ ³/₂₄-⁴⁵/₈₁ ²¹/₂₄-⁹/₈₁ ³/₂₄-⁶³/₈₁

Subtract Fractions Calculator