Subtract 20/18 from 1/56
1st number: 1/56, 2nd number: 1 2/18
1/56 - 20/18 is -551/504.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 18 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
1/56 = 1 × 9/56 × 9 = 9/504 - Likewise, for the 2nd fraction, since 18 × 28 = 504,
20/18 = 20 × 28/18 × 28 = 560/504 - Subtract the two like fractions:
9/504 - 560/504 = 9 - 560/504 = -551/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/56-20/18 1/56-40/18 1/56-20/36 3/56-20/18 1/56-60/18 1/56-20/54 5/56-20/18 1/56-20/90 7/56-20/18