Subtract 20/27 from 4/9
4/9 - 20/27 is -8/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 27 is 27
Next, find the equivalent fraction of both fractional numbers with denominator 27 - For the 1st fraction, since 9 × 3 = 27,
4/9 = 4 × 3/9 × 3 = 12/27 - Likewise, for the 2nd fraction, since 27 × 1 = 27,
20/27 = 20 × 1/27 × 1 = 20/27 - Subtract the two like fractions:
12/27 - 20/27 = 12 - 20/27 = -8/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/9-20/27 4/9-40/27 4/18-20/27 4/9-20/54 12/9-20/27 4/9-60/27 4/27-20/27 4/9-20/81 20/9-20/27 4/45-20/27 28/9-20/27 4/63-20/27