Subtract 20/36 from 8/12
8/12 - 20/36 is 1/9.
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,
8/12 = 8 × 3/12 × 3 = 24/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
20/36 = 20 × 1/36 × 1 = 20/36 - Subtract the two like fractions:
24/36 - 20/36 = 24 - 20/36 = 4/36 - After reducing the fraction, the answer is 1/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12-20/36 8/12-40/36 8/24-20/36 8/12-20/72 24/12-20/36 8/12-60/36 8/36-20/36 40/12-20/36 8/60-20/36 56/12-20/36 8/84-20/36