Subtract 5/7 from 18/56
18/56 - 5/7 is -11/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 7 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 56 × 1 = 56,
18/56 = 18 × 1/56 × 1 = 18/56 - Likewise, for the 2nd fraction, since 7 × 8 = 56,
5/7 = 5 × 8/7 × 8 = 40/56 - Subtract the two like fractions:
18/56 - 40/56 = 18 - 40/56 = -22/56 - After reducing the fraction, the answer is -11/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/56-5/7 18/56-10/7 18/56-5/14 54/56-5/7 18/56-15/7 18/56-5/21 90/56-5/7 18/56-25/7 18/56-5/35 18/56-35/7 18/56-5/49