Subtract 1/90 from 10/25
10/25 - 1/90 is 7/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
10/25 = 10 × 18/25 × 18 = 180/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
1/90 = 1 × 5/90 × 5 = 5/450 - Subtract the two like fractions:
180/450 - 5/450 = 180 - 5/450 = 175/450 - After reducing the fraction, the answer is 7/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/25-1/90 10/25-2/90 10/50-1/90 30/25-1/90 10/25-3/90 10/75-1/90 50/25-1/90 10/25-5/90 70/25-1/90 10/25-7/90