Subtract 3/15 from 15/45
15/45 - 3/15 is 2/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
15/45 = 15 × 1/45 × 1 = 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: 30/45-3/15 15/45-6/15 15/90-3/15 15/45-3/30 15/45-9/15 15/45-3/45 75/45-3/15 15/45-3/75 15/45-21/15