Subtract 7/54 from 18/28
18/28 - 7/54 is 97/189.
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,
7/54 = 7 × 14/54 × 14 = 98/756 - Subtract the two like fractions:
486/756 - 98/756 = 486 - 98/756 = 388/756 - After reducing the fraction, the answer is 97/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28-7/54 18/28-14/54 18/56-7/54 54/28-7/54 18/28-21/54 18/84-7/54 90/28-7/54 18/28-35/54 18/28-49/54