Subtract 1/90 from 8/36
8/36 - 1/90 is 19/90.
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,
8/36 = 8 × 5/36 × 5 = 40/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
1/90 = 1 × 2/90 × 2 = 2/180 - Subtract the two like fractions:
40/180 - 2/180 = 40 - 2/180 = 38/180 - After reducing the fraction, the answer is 19/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/36-1/90 8/36-2/90 8/72-1/90 24/36-1/90 8/36-3/90 40/36-1/90 8/36-5/90 56/36-1/90 8/36-7/90