Subtract 20/36 from 8/9
8/9 - 20/36 is 1/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 36 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
8/9 = 8 × 4/9 × 4 = 32/36 - Likewise, for the 2nd fraction, since 36 × 1 = 36,
20/36 = 20 × 1/36 × 1 = 20/36 - Subtract the two like fractions:
32/36 - 20/36 = 32 - 20/36 = 12/36 - After reducing the fraction, the answer is 1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/9-20/36 8/9-40/36 8/18-20/36 8/9-20/72 24/9-20/36 8/9-60/36 8/27-20/36 40/9-20/36 8/45-20/36 56/9-20/36 8/63-20/36