Subtract 1/18 from 3/15
3/15 - 1/18 is 13/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
3/15 = 3 × 6/15 × 6 = 18/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
1/18 = 1 × 5/18 × 5 = 5/90 - Subtract the two like fractions:
18/90 - 5/90 = 18 - 5/90 = 13/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15-1/18 3/15-2/18 3/30-1/18 3/15-1/36 9/15-1/18 3/15-3/18 3/45-1/18 3/15-1/54 3/15-5/18 3/75-1/18 3/15-1/90 21/15-1/18 3/15-7/18