Subtract 7/90 from 2/36
2/36 - 7/90 is -1/45.
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,
2/36 = 2 × 5/36 × 5 = 10/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
7/90 = 7 × 2/90 × 2 = 14/180 - Subtract the two like fractions:
10/180 - 14/180 = 10 - 14/180 = -4/180 - After reducing the fraction, the answer is -1/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/36-7/90 2/36-14/90 2/72-7/90 6/36-7/90 2/36-21/90 10/36-7/90 2/36-35/90 14/36-7/90 2/36-49/90