Subtract 18/27 from 1/18
1/18 - 18/27 is -11/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
1/18 = 1 × 3/18 × 3 = 3/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
18/27 = 18 × 2/27 × 2 = 36/54 - Subtract the two like fractions:
3/54 - 36/54 = 3 - 36/54 = -33/54 - After reducing the fraction, the answer is -11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18-18/27 1/18-36/27 1/36-18/27 1/18-18/54 3/18-18/27 1/18-54/27 1/54-18/27 1/18-18/81 5/18-18/27 1/18-90/27 1/90-18/27 7/18-18/27