Subtract 12/18 from 1/15
1/15 - 12/18 is -3/5.
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,
1/15 = 1 × 6/15 × 6 = 6/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
12/18 = 12 × 5/18 × 5 = 60/90 - Subtract the two like fractions:
6/90 - 60/90 = 6 - 60/90 = -54/90 - After reducing the fraction, the answer is -3/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15-12/18 1/15-24/18 1/30-12/18 1/15-12/36 3/15-12/18 1/15-36/18 1/45-12/18 1/15-12/54 5/15-12/18 1/15-60/18 1/75-12/18 1/15-12/90 7/15-12/18 1/15-84/18