Subtract 10/40 from 20/27
20/27 - 10/40 is 53/108.
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,
10/40 = 10 × 27/40 × 27 = 270/1080 - Subtract the two like fractions:
800/1080 - 270/1080 = 800 - 270/1080 = 530/1080 - After reducing the fraction, the answer is 53/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/27-10/40 20/27-20/40 20/54-10/40 20/27-10/80 60/27-10/40 20/27-30/40 20/81-10/40 20/27-50/40 20/27-70/40