Subtract 6/15 from 5/90
5/90 - 6/15 is -31/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
5/90 = 5 × 1/90 × 1 = 5/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
6/15 = 6 × 6/15 × 6 = 36/90 - Subtract the two like fractions:
5/90 - 36/90 = 5 - 36/90 = -31/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/90-6/15 5/90-12/15 5/90-6/30 15/90-6/15 5/90-18/15 5/90-6/45 25/90-6/15 5/90-30/15 5/90-6/75 35/90-6/15 5/90-42/15