Subtract 5/20 from 8/15
8/15 - 5/20 is 17/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
8/15 = 8 × 4/15 × 4 = 32/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
5/20 = 5 × 3/20 × 3 = 15/60 - Subtract the two like fractions:
32/60 - 15/60 = 32 - 15/60 = 17/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/15-5/20 8/15-10/20 8/30-5/20 8/15-5/40 24/15-5/20 8/15-15/20 8/45-5/20 8/15-5/60 40/15-5/20 8/15-25/20 8/75-5/20 56/15-5/20 8/15-35/20