Subtract 25/27 from 21/56
21/56 - 25/27 is -119/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 27 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 56 × 27 = 1512,
21/56 = 21 × 27/56 × 27 = 567/1512 - Likewise, for the 2nd fraction, since 27 × 56 = 1512,
25/27 = 25 × 56/27 × 56 = 1400/1512 - Subtract the two like fractions:
567/1512 - 1400/1512 = 567 - 1400/1512 = -833/1512 - After reducing the fraction, the answer is -119/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/56-25/27 21/56-50/27 21/56-25/54 63/56-25/27 21/56-75/27 21/56-25/81