Subtract 8/90 from 7/36
7/36 - 8/90 is 19/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
7/36 = 7 × 5/36 × 5 = 35/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
8/90 = 8 × 2/90 × 2 = 16/180 - Subtract the two like fractions:
35/180 - 16/180 = 35 - 16/180 = 19/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/36-8/90 7/36-16/90 7/72-8/90 21/36-8/90 7/36-24/90 35/36-8/90 7/36-40/90 49/36-8/90 7/36-56/90