Answers

Subtract 24/81 from 4/30

4/30 - 24/81 is -22/135.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 30 × 27 = 810,
   4/30 = 4 × 27/30 × 27 = 108/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   24/81 = 24 × 10/81 × 10 = 240/810
4. Subtract the two like fractions:
   108/810 - 240/810 = 108 - 240/810 = -132/810
5. After reducing the fraction, the answer is -22/135

MathStep (Works offline)

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

Related: ⁸/₃₀-²⁴/₈₁ ⁴/₃₀-⁴⁸/₈₁ ⁴/₆₀-²⁴/₈₁ ¹²/₃₀-²⁴/₈₁ ⁴/₃₀-⁷²/₈₁ ⁴/₉₀-²⁴/₈₁ ²⁰/₃₀-²⁴/₈₁ ²⁸/₃₀-²⁴/₈₁

Subtract Fractions Calculator