Subtract 8/25 from 15/90
15/90 - 8/25 is -23/150.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 25 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
15/90 = 15 × 5/90 × 5 = 75/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
8/25 = 8 × 18/25 × 18 = 144/450 - Subtract the two like fractions:
75/450 - 144/450 = 75 - 144/450 = -69/450 - After reducing the fraction, the answer is -23/150
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90-8/25 15/90-16/25 15/90-8/50 45/90-8/25 15/90-24/25 15/90-8/75 75/90-8/25 15/90-40/25 15/90-56/25