Subtract 8/18 from 18/56
18/56 - 8/18 is -31/252.
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,
18/56 = 18 × 9/56 × 9 = 162/504 - Likewise, for the 2nd fraction, since 18 × 28 = 504,
8/18 = 8 × 28/18 × 28 = 224/504 - Subtract the two like fractions:
162/504 - 224/504 = 162 - 224/504 = -62/504 - After reducing the fraction, the answer is -31/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/56-8/18 18/56-16/18 18/56-8/36 54/56-8/18 18/56-24/18 18/56-8/54 90/56-8/18 18/56-40/18 18/56-8/90 18/56-56/18