Subtract 5/54 from 18/28
18/28 - 5/54 is 104/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 54 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
18/28 = 18 × 27/28 × 27 = 486/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
5/54 = 5 × 14/54 × 14 = 70/756 - Subtract the two like fractions:
486/756 - 70/756 = 486 - 70/756 = 416/756 - After reducing the fraction, the answer is 104/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-5/54 18/28-10/54 18/56-5/54 54/28-5/54 18/28-15/54 18/84-5/54 90/28-5/54 18/28-25/54 18/28-35/54