Subtract 90/18 from 5/8
1st number: 5/8, 2nd number: 5 0/18
5/8 - 90/18 is -35/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 18 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
5/8 = 5 × 9/8 × 9 = 45/72 - Likewise, for the 2nd fraction, since 18 × 4 = 72,
90/18 = 90 × 4/18 × 4 = 360/72 - Subtract the two like fractions:
45/72 - 360/72 = 45 - 360/72 = -315/72 - After reducing the fraction, the answer is -35/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/8-90/18 5/16-90/18 5/8-90/36 15/8-90/18 5/24-90/18 5/8-90/54 25/8-90/18 5/40-90/18 35/8-90/18 5/56-90/18