Subtract 8/5 from 90/8
1st number: 11 2/8, 2nd number: 1 3/5
90/8 - 8/5 is 193/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
90/8 = 90 × 5/8 × 5 = 450/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
8/5 = 8 × 8/5 × 8 = 64/40 - Subtract the two like fractions:
450/40 - 64/40 = 450 - 64/40 = 386/40 - After reducing the fraction, the answer is 193/20
- In mixed form: 913/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8-16/5 90/16-8/5 90/8-8/10 90/8-24/5 90/24-8/5 90/8-8/15 90/8-40/5 90/40-8/5 90/8-8/25 90/8-56/5 90/56-8/5 90/8-8/35