Subtract 20/18 from 5/56
1st number: 5/56, 2nd number: 1 2/18
5/56 - 20/18 is -515/504.
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,
5/56 = 5 × 9/56 × 9 = 45/504 - Likewise, for the 2nd fraction, since 18 × 28 = 504,
20/18 = 20 × 28/18 × 28 = 560/504 - Subtract the two like fractions:
45/504 - 560/504 = 45 - 560/504 = -515/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/56-20/18 5/56-40/18 5/56-20/36 15/56-20/18 5/56-60/18 5/56-20/54 25/56-20/18 5/56-20/90 35/56-20/18