Subtract 21/24 from 9/54
9/54 - 21/24 is -17/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 24 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
9/54 = 9 × 4/54 × 4 = 36/216 - Likewise, for the 2nd fraction, since 24 × 9 = 216,
21/24 = 21 × 9/24 × 9 = 189/216 - Subtract the two like fractions:
36/216 - 189/216 = 36 - 189/216 = -153/216 - After reducing the fraction, the answer is -17/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/54-21/24 9/54-42/24 9/54-21/48 27/54-21/24 9/54-63/24 9/54-21/72 45/54-21/24 63/54-21/24