Subtract 15/36 from 2/90
2/90 - 15/36 is -71/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
2/90 = 2 × 2/90 × 2 = 4/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
15/36 = 15 × 5/36 × 5 = 75/180 - Subtract the two like fractions:
4/180 - 75/180 = 4 - 75/180 = -71/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/90-15/36 2/90-30/36 2/90-15/72 6/90-15/36 2/90-45/36 10/90-15/36 2/90-75/36 14/90-15/36