Subtract 15/90 from 15/25
15/25 - 15/90 is 13/30.
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,
15/25 = 15 × 18/25 × 18 = 270/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
15/90 = 15 × 5/90 × 5 = 75/450 - Subtract the two like fractions:
270/450 - 75/450 = 270 - 75/450 = 195/450 - After reducing the fraction, the answer is 13/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/25-15/90 15/25-30/90 15/50-15/90 45/25-15/90 15/25-45/90 15/75-15/90 75/25-15/90 15/25-75/90