Subtract 18/90 from 10/25
10/25 - 18/90 is 1/5.
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,
18/90 = 18 × 5/90 × 5 = 90/450 - Subtract the two like fractions:
180/450 - 90/450 = 180 - 90/450 = 90/450 - After reducing the fraction, the answer is 1/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/25-18/90 10/25-36/90 10/50-18/90 30/25-18/90 10/25-54/90 10/75-18/90 50/25-18/90 70/25-18/90