Subtract 6/18 from 21/24
21/24 - 6/18 is 13/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
21/24 = 21 × 3/24 × 3 = 63/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
6/18 = 6 × 4/18 × 4 = 24/72 - Subtract the two like fractions:
63/72 - 24/72 = 63 - 24/72 = 39/72 - After reducing the fraction, the answer is 13/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24-6/18 21/24-12/18 21/48-6/18 21/24-6/36 63/24-6/18 21/72-6/18 21/24-6/54 21/24-30/18 21/24-6/90 21/24-42/18