Subtract 6/28 from 21/54
21/54 - 6/28 is 11/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 28 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 54 × 14 = 756,
21/54 = 21 × 14/54 × 14 = 294/756 - Likewise, for the 2nd fraction, since 28 × 27 = 756,
6/28 = 6 × 27/28 × 27 = 162/756 - Subtract the two like fractions:
294/756 - 162/756 = 294 - 162/756 = 132/756 - After reducing the fraction, the answer is 11/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54-6/28 21/54-12/28 21/54-6/56 63/54-6/28 21/54-18/28 21/54-6/84 21/54-30/28 21/54-42/28