Subtract 7/54 from 21/24
21/24 - 7/54 is 161/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 54 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 24 × 9 = 216,
21/24 = 21 × 9/24 × 9 = 189/216 - Likewise, for the 2nd fraction, since 54 × 4 = 216,
7/54 = 7 × 4/54 × 4 = 28/216 - Subtract the two like fractions:
189/216 - 28/216 = 189 - 28/216 = 161/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24-7/54 21/24-14/54 21/48-7/54 63/24-7/54 21/24-21/54 21/72-7/54 21/24-35/54 21/24-49/54