Subtract 3/15 from 3/9
3/9 - 3/15 is 2/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
3/9 = 3 × 5/9 × 5 = 15/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
3/15 = 3 × 3/15 × 3 = 9/45 - Subtract the two like fractions:
15/45 - 9/45 = 15 - 9/45 = 6/45 - After reducing the fraction, the answer is 2/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9-3/15 3/9-6/15 3/18-3/15 3/9-3/30 3/9-9/15 3/27-3/15 3/9-3/45 15/9-3/15 3/45-3/15 3/9-3/75 21/9-3/15 3/9-21/15 3/63-3/15