Subtract 1/7 from 1/15
1/15 - 1/7 is -8/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
1/15 = 1 × 7/15 × 7 = 7/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
1/7 = 1 × 15/7 × 15 = 15/105 - Subtract the two like fractions:
7/105 - 15/105 = 7 - 15/105 = -8/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15-1/7 1/15-2/7 1/30-1/7 1/15-1/14 3/15-1/7 1/15-3/7 1/45-1/7 1/15-1/21 5/15-1/7 1/15-5/7 1/75-1/7 1/15-1/35 7/15-1/7 1/15-1/49