Subtract 1/90 from 25/15
1st number: 1 10/15, 2nd number: 1/90
25/15 - 1/90 is 149/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
25/15 = 25 × 6/15 × 6 = 150/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
1/90 = 1 × 1/90 × 1 = 1/90 - Subtract the two like fractions:
150/90 - 1/90 = 150 - 1/90 = 149/90 - In mixed form: 159/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/15-1/90 25/15-2/90 25/30-1/90 75/15-1/90 25/15-3/90 25/45-1/90 25/15-5/90 25/75-1/90 25/15-7/90