Subtract 25/90 from 90/18
1st number: 5 0/18, 2nd number: 25/90
90/18 - 25/90 is 85/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
90/18 = 90 × 5/18 × 5 = 450/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
25/90 = 25 × 1/90 × 1 = 25/90 - Subtract the two like fractions:
450/90 - 25/90 = 450 - 25/90 = 425/90 - After reducing the fraction, the answer is 85/18
- In mixed form: 413/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18-50/90 90/36-25/90 90/18-75/90 90/54-25/90