Subtract 15/25 from 5/90
5/90 - 15/25 is -49/90.
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,
5/90 = 5 × 5/90 × 5 = 25/450 - Likewise, for the 2nd fraction, since 25 × 18 = 450,
15/25 = 15 × 18/25 × 18 = 270/450 - Subtract the two like fractions:
25/450 - 270/450 = 25 - 270/450 = -245/450 - After reducing the fraction, the answer is -49/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/90-15/25 5/90-30/25 5/90-15/50 15/90-15/25 5/90-45/25 5/90-15/75 25/90-15/25 5/90-75/25 35/90-15/25