Subtract 3/15 from 18/24
18/24 - 3/15 is 11/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
18/24 = 18 × 5/24 × 5 = 90/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
3/15 = 3 × 8/15 × 8 = 24/120 - Subtract the two like fractions:
90/120 - 24/120 = 90 - 24/120 = 66/120 - After reducing the fraction, the answer is 11/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/24-3/15 18/24-6/15 18/48-3/15 18/24-3/30 54/24-3/15 18/24-9/15 18/72-3/15 18/24-3/45 90/24-3/15 18/24-3/75 18/24-21/15