Subtract 21/27 from 4/56
4/56 - 21/27 is -89/126.
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,
4/56 = 4 × 27/56 × 27 = 108/1512 - Likewise, for the 2nd fraction, since 27 × 56 = 1512,
21/27 = 21 × 56/27 × 56 = 1176/1512 - Subtract the two like fractions:
108/1512 - 1176/1512 = 108 - 1176/1512 = -1068/1512 - After reducing the fraction, the answer is -89/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/56-21/27 4/56-42/27 4/56-21/54 12/56-21/27 4/56-63/27 4/56-21/81 20/56-21/27 28/56-21/27