Subtract 90/5 from 18/56
1st number: 18/56, 2nd number: 18 0/5
18/56 - 90/5 is -495/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 5 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
18/56 = 18 × 5/56 × 5 = 90/280 - Likewise, for the 2nd fraction, since 5 × 56 = 280,
90/5 = 90 × 56/5 × 56 = 5040/280 - Subtract the two like fractions:
90/280 - 5040/280 = 90 - 5040/280 = -4950/280 - After reducing the fraction, the answer is -495/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/56-90/5 18/56-90/10 54/56-90/5 18/56-90/15 90/56-90/5 18/56-90/25 18/56-90/35