Answers

Subtract 28/40 from 24/84

24/84 - 28/40 is -29/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 84 × 10 = 840,
   24/84 = 24 × 10/84 × 10 = 240/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   28/40 = 28 × 21/40 × 21 = 588/840
4. Subtract the two like fractions:
   240/840 - 588/840 = 240 - 588/840 = -348/840
5. After reducing the fraction, the answer is -29/70

MathStep (Works offline)

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

Related: ⁴⁸/₈₄-²⁸/₄₀ ²⁴/₈₄-⁵⁶/₄₀ ²⁴/₈₄-²⁸/₈₀ ⁷²/₈₄-²⁸/₄₀ ²⁴/₈₄-⁸⁴/₄₀

Subtract Fractions Calculator