Subtract 1/60 from 20/27
20/27 - 1/60 is 391/540.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 60 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 27 × 20 = 540,
20/27 = 20 × 20/27 × 20 = 400/540 - Likewise, for the 2nd fraction, since 60 × 9 = 540,
1/60 = 1 × 9/60 × 9 = 9/540 - Subtract the two like fractions:
400/540 - 9/540 = 400 - 9/540 = 391/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/27-1/60 20/27-2/60 20/54-1/60 60/27-1/60 20/27-3/60 20/81-1/60 20/27-5/60 20/27-7/60