Subtract 6/40 from 20/27
20/27 - 6/40 is 319/540.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 40 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 27 × 40 = 1080,
20/27 = 20 × 40/27 × 40 = 800/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
6/40 = 6 × 27/40 × 27 = 162/1080 - Subtract the two like fractions:
800/1080 - 162/1080 = 800 - 162/1080 = 638/1080 - After reducing the fraction, the answer is 319/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/27-6/40 20/27-12/40 20/54-6/40 20/27-6/80 60/27-6/40 20/27-18/40 20/81-6/40 20/27-30/40 20/27-42/40