Subtract 4/15 from 9/20
9/20 - 4/15 is 11/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
9/20 = 9 × 3/20 × 3 = 27/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
4/15 = 4 × 4/15 × 4 = 16/60 - Subtract the two like fractions:
27/60 - 16/60 = 27 - 16/60 = 11/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20-4/15 9/20-8/15 9/40-4/15 9/20-4/30 27/20-4/15 9/20-12/15 9/60-4/15 9/20-4/45 45/20-4/15 9/20-20/15 9/20-4/75 63/20-4/15 9/20-28/15