Subtract 9/18 from 20/36
20/36 - 9/18 is 1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 36 × 1 = 36,
20/36 = 20 × 1/36 × 1 = 20/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
9/18 = 9 × 2/18 × 2 = 18/36 - Subtract the two like fractions:
20/36 - 18/36 = 20 - 18/36 = 2/36 - After reducing the fraction, the answer is 1/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/36-9/18 20/72-9/18 20/36-9/36 60/36-9/18 20/36-27/18 20/36-9/54 20/36-45/18 20/36-9/90 20/36-63/18