Subtract 1/12 from 21/24
21/24 - 1/12 is 19/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 12 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 24 × 1 = 24,
21/24 = 21 × 1/24 × 1 = 21/24 - Likewise, for the 2nd fraction, since 12 × 2 = 24,
1/12 = 1 × 2/12 × 2 = 2/24 - Subtract the two like fractions:
21/24 - 2/24 = 21 - 2/24 = 19/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24-1/12 21/24-2/12 21/48-1/12 21/24-1/24 63/24-1/12 21/24-3/12 21/72-1/12 21/24-1/36 21/24-5/12 21/24-1/60 21/24-7/12 21/24-1/84