Subtract 5/15 from 18/3
1st number: 6 0/3, 2nd number: 5/15
18/3 - 5/15 is 17/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 15 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 3 × 5 = 15,
18/3 = 18 × 5/3 × 5 = 90/15 - Likewise, for the 2nd fraction, since 15 × 1 = 15,
5/15 = 5 × 1/15 × 1 = 5/15 - Subtract the two like fractions:
90/15 - 5/15 = 90 - 5/15 = 85/15 - After reducing the fraction, the answer is 17/3
- In mixed form: 52/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/3-5/15 18/3-10/15 18/6-5/15 18/3-5/30 54/3-5/15 18/9-5/15 18/3-5/45 90/3-5/15 18/3-25/15 18/15-5/15 18/3-5/75 18/3-35/15 18/21-5/15