Subtract 15/25 from 10/18
10/18 - 15/25 is -2/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 25 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 18 × 25 = 450,
10/18 = 10 × 25/18 × 25 = 250/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
15/25 = 15 × 18/25 × 18 = 270/450 - Subtract the two like fractions:
250/450 - 270/450 = 250 - 270/450 = -20/450 - After reducing the fraction, the answer is -2/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/18-15/25 10/18-30/25 10/36-15/25 10/18-15/50 30/18-15/25 10/18-45/25 10/54-15/25 10/18-15/75 50/18-15/25 10/18-75/25 10/90-15/25 70/18-15/25