Subtract 21/24 from 1/9
1/9 - 21/24 is -55/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 24 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
1/9 = 1 × 8/9 × 8 = 8/72 - Likewise, for the 2nd fraction, since 24 × 3 = 72,
21/24 = 21 × 3/24 × 3 = 63/72 - Subtract the two like fractions:
8/72 - 63/72 = 8 - 63/72 = -55/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/9-21/24 1/9-42/24 1/18-21/24 1/9-21/48 3/9-21/24 1/9-63/24 1/27-21/24 1/9-21/72 5/9-21/24 1/45-21/24 7/9-21/24 1/63-21/24