Subtract 4/18 from 20/54
20/54 - 4/18 is 4/27.
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,
20/54 = 20 × 1/54 × 1 = 20/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
4/18 = 4 × 3/18 × 3 = 12/54 - Subtract the two like fractions:
20/54 - 12/54 = 20 - 12/54 = 8/54 - After reducing the fraction, the answer is 4/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/54-4/18 20/54-8/18 20/54-4/36 60/54-4/18 20/54-12/18 20/54-4/54 20/54-20/18 20/54-4/90 20/54-28/18