Subtract 1/20 from 7/36
7/36 - 1/20 is 13/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 20 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 20 × 9 = 180,
1/20 = 1 × 9/20 × 9 = 9/180 - Subtract the two like fractions:
35/180 - 9/180 = 35 - 9/180 = 26/180 - After reducing the fraction, the answer is 13/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/36-1/20 7/36-2/20 7/72-1/20 7/36-1/40 21/36-1/20 7/36-3/20 7/36-1/60 35/36-1/20 7/36-5/20 49/36-1/20 7/36-7/20