Subtract 28/18 from 1/15
1st number: 1/15, 2nd number: 1 10/18
1/15 - 28/18 is -67/45.
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,
28/18 = 28 × 5/18 × 5 = 140/90 - Subtract the two like fractions:
6/90 - 140/90 = 6 - 140/90 = -134/90 - After reducing the fraction, the answer is -67/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15-28/18 1/15-56/18 1/30-28/18 1/15-28/36 3/15-28/18 1/15-84/18 1/45-28/18 1/15-28/54 5/15-28/18 1/75-28/18 1/15-28/90 7/15-28/18