Subtract 3/18 from 7/54
7/54 - 3/18 is -1/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 18 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 54 × 1 = 54,
7/54 = 7 × 1/54 × 1 = 7/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
3/18 = 3 × 3/18 × 3 = 9/54 - Subtract the two like fractions:
7/54 - 9/54 = 7 - 9/54 = -2/54 - After reducing the fraction, the answer is -1/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/54-3/18 7/54-6/18 7/54-3/36 21/54-3/18 7/54-9/18 7/54-3/54 35/54-3/18 7/54-15/18 7/54-3/90 49/54-3/18 7/54-21/18