Subtract 30/56 from 9/18
9/18 - 30/56 is -1/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 18 × 28 = 504,
9/18 = 9 × 28/18 × 28 = 252/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
30/56 = 30 × 9/56 × 9 = 270/504 - Subtract the two like fractions:
252/504 - 270/504 = 252 - 270/504 = -18/504 - After reducing the fraction, the answer is -1/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 9/18-60/56 9/36-30/56 27/18-30/56 9/18-90/56 9/54-30/56 45/18-30/56 9/90-30/56 63/18-30/56