Subtract 6/8 from 18/15
1st number: 1 3/15, 2nd number: 6/8
18/15 - 6/8 is 9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
18/15 = 18 × 8/15 × 8 = 144/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
6/8 = 6 × 15/8 × 15 = 90/120 - Subtract the two like fractions:
144/120 - 90/120 = 144 - 90/120 = 54/120 - After reducing the fraction, the answer is 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15-6/8 18/15-12/8 18/30-6/8 18/15-6/16 54/15-6/8 18/15-18/8 18/45-6/8 18/15-6/24 90/15-6/8 18/15-30/8 18/75-6/8 18/15-6/40 18/15-42/8 18/15-6/56