Subtract 5/18 from 28/54
28/54 - 5/18 is 13/54.
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,
28/54 = 28 × 1/54 × 1 = 28/54 - Likewise, for the 2nd fraction, since 18 × 3 = 54,
5/18 = 5 × 3/18 × 3 = 15/54 - Subtract the two like fractions:
28/54 - 15/54 = 28 - 15/54 = 13/54
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/54-5/18 28/54-10/18 28/54-5/36 84/54-5/18 28/54-15/18 28/54-5/54 28/54-25/18 28/54-5/90 28/54-35/18