Subtract 15/18 from 6/15
6/15 - 15/18 is -13/30.
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,
6/15 = 6 × 6/15 × 6 = 36/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Subtract the two like fractions:
36/90 - 75/90 = 36 - 75/90 = -39/90 - After reducing the fraction, the answer is -13/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/15-15/18 6/15-30/18 6/30-15/18 6/15-15/36 18/15-15/18 6/15-45/18 6/45-15/18 6/15-15/54 30/15-15/18 6/15-75/18 6/75-15/18 6/15-15/90 42/15-15/18