Subtract 18/90 from 1/15
1/15 - 18/90 is -2/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
1/15 = 1 × 6/15 × 6 = 6/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
18/90 = 18 × 1/90 × 1 = 18/90 - Subtract the two like fractions:
6/90 - 18/90 = 6 - 18/90 = -12/90 - After reducing the fraction, the answer is -2/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15-18/90 1/15-36/90 1/30-18/90 3/15-18/90 1/15-54/90 1/45-18/90 5/15-18/90 1/75-18/90 7/15-18/90