Subtract 18/5 from 90/9
1st number: 10 0/9, 2nd number: 3 3/5
90/9 - 18/5 is 32/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 5 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
90/9 = 90 × 5/9 × 5 = 450/45 - Likewise, for the 2nd fraction, since 5 × 9 = 45,
18/5 = 18 × 9/5 × 9 = 162/45 - Subtract the two like fractions:
450/45 - 162/45 = 450 - 162/45 = 288/45 - After reducing the fraction, the answer is 32/5
- In mixed form: 62/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/9-36/5 90/18-18/5 90/9-18/10 90/9-54/5 90/27-18/5 90/9-18/15 90/9-90/5 90/45-18/5 90/9-18/25 90/63-18/5 90/9-18/35