Subtract 21/24 from 56/84
56/84 - 21/24 is -5/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
56/84 = 56 × 2/84 × 2 = 112/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Subtract the two like fractions:
112/168 - 147/168 = 112 - 147/168 = -35/168 - After reducing the fraction, the answer is -5/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/84-42/24 56/84-21/48 56/84-63/24 56/84-21/72