Subtract 9/20 from 1/6
1/6 - 9/20 is -17/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 6 × 10 = 60,
1/6 = 1 × 10/6 × 10 = 10/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
9/20 = 9 × 3/20 × 3 = 27/60 - Subtract the two like fractions:
10/60 - 27/60 = 10 - 27/60 = -17/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/6-9/20 1/6-18/20 1/12-9/20 1/6-9/40 3/6-9/20 1/6-27/20 1/18-9/20 1/6-9/60 5/6-9/20 1/6-45/20 1/30-9/20 7/6-9/20 1/6-63/20 1/42-9/20