Subtract 21/60 from 40/27
1st number: 1 13/27, 2nd number: 21/60
40/27 - 21/60 is 611/540.
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,
40/27 = 40 × 20/27 × 20 = 800/540 - Likewise, for the 2nd fraction, since 60 × 9 = 540,
21/60 = 21 × 9/60 × 9 = 189/540 - Subtract the two like fractions:
800/540 - 189/540 = 800 - 189/540 = 611/540 - In mixed form: 171/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/27-21/60 40/27-42/60 40/54-21/60 40/27-63/60 40/81-21/60