Subtract 1/24 from 21/27
21/27 - 1/24 is 53/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 24 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 27 × 8 = 216,
21/27 = 21 × 8/27 × 8 = 168/216 - Likewise, for the 2nd fraction, since 24 × 9 = 216,
1/24 = 1 × 9/24 × 9 = 9/216 - Subtract the two like fractions:
168/216 - 9/216 = 168 - 9/216 = 159/216 - After reducing the fraction, the answer is 53/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/27-1/24 21/27-2/24 21/54-1/24 21/27-1/48 63/27-1/24 21/27-3/24 21/81-1/24 21/27-1/72 21/27-5/24 21/27-7/24