Subtract 28/90 from 25/18
1st number: 1 7/18, 2nd number: 28/90
25/18 - 28/90 is 97/90.
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,
25/18 = 25 × 5/18 × 5 = 125/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
28/90 = 28 × 1/90 × 1 = 28/90 - Subtract the two like fractions:
125/90 - 28/90 = 125 - 28/90 = 97/90 - In mixed form: 17/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/18-28/90 25/18-56/90 25/36-28/90 75/18-28/90 25/18-84/90 25/54-28/90 25/90-28/90