Subtract 1/56 from 21/54
21/54 - 1/56 is 187/504.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 56 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 54 × 28 = 1512,
21/54 = 21 × 28/54 × 28 = 588/1512 - Likewise, for the 2nd fraction, since 56 × 27 = 1512,
1/56 = 1 × 27/56 × 27 = 27/1512 - Subtract the two like fractions:
588/1512 - 27/1512 = 588 - 27/1512 = 561/1512 - After reducing the fraction, the answer is 187/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/54-1/56 21/54-2/56 63/54-1/56 21/54-3/56 21/54-5/56 21/54-7/56