Subtract 18/40 from 2/27
2/27 - 18/40 is -203/540.
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,
2/27 = 2 × 40/27 × 40 = 80/1080 - Likewise, for the 2nd fraction, since 40 × 27 = 1080,
18/40 = 18 × 27/40 × 27 = 486/1080 - Subtract the two like fractions:
80/1080 - 486/1080 = 80 - 486/1080 = -406/1080 - After reducing the fraction, the answer is -203/540
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/27-18/40 2/27-36/40 2/54-18/40 2/27-18/80 6/27-18/40 2/27-54/40 2/81-18/40 10/27-18/40 2/27-90/40 14/27-18/40