Subtract 20/36 from 9/12
9/12 - 20/36 is 7/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
9/12 = 9 × 3/12 × 3 = 27/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
20/36 = 20 × 1/36 × 1 = 20/36 - Subtract the two like fractions:
27/36 - 20/36 = 27 - 20/36 = 7/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12-20/36 9/12-40/36 9/24-20/36 9/12-20/72 27/12-20/36 9/12-60/36 9/36-20/36 45/12-20/36 9/60-20/36 63/12-20/36 9/84-20/36