Subtract 5/15 from 9/18
9/18 - 5/15 is 1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
9/18 = 9 × 5/18 × 5 = 45/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
5/15 = 5 × 6/15 × 6 = 30/90 - Subtract the two like fractions:
45/90 - 30/90 = 45 - 30/90 = 15/90 - After reducing the fraction, the answer is 1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18-10/15 9/36-5/15 9/18-5/30 27/18-5/15 9/54-5/15 9/18-5/45 45/18-5/15 9/18-25/15 9/90-5/15 9/18-5/75 63/18-5/15 9/18-35/15