Subtract 1/20 from 4/12
4/12 - 1/20 is 17/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
4/12 = 4 × 5/12 × 5 = 20/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
1/20 = 1 × 3/20 × 3 = 3/60 - Subtract the two like fractions:
20/60 - 3/60 = 20 - 3/60 = 17/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12-1/20 4/12-2/20 4/24-1/20 4/12-1/40 4/12-3/20 4/36-1/20 4/12-1/60 20/12-1/20 4/12-5/20 4/60-1/20 28/12-1/20 4/12-7/20 4/84-1/20