Subtract 21/24 from 5/8
5/8 - 21/24 is -1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 8 × 3 = 24,
5/8 = 5 × 3/8 × 3 = 15/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
21/24 = 21 × 1/24 × 1 = 21/24 - Subtract the two like fractions:
15/24 - 21/24 = 15 - 21/24 = -6/24 - After reducing the fraction, the answer is -1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/8-21/24 5/8-42/24 5/16-21/24 5/8-21/48 15/8-21/24 5/8-63/24 5/24-21/24 5/8-21/72 25/8-21/24 5/40-21/24 35/8-21/24 5/56-21/24