Subtract 12/54 from 7/28
7/28 - 12/54 is 1/36.
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,
7/28 = 7 × 27/28 × 27 = 189/756 - Likewise, for the 2nd fraction, since 54 × 14 = 756,
12/54 = 12 × 14/54 × 14 = 168/756 - Subtract the two like fractions:
189/756 - 168/756 = 189 - 168/756 = 21/756 - After reducing the fraction, the answer is 1/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28-12/54 7/28-24/54 7/56-12/54 21/28-12/54 7/28-36/54 7/84-12/54 35/28-12/54 7/28-60/54 49/28-12/54 7/28-84/54