Subtract 4/81 from 2/9
2/9 - 4/81 is 14/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
2/9 = 2 × 9/9 × 9 = 18/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
4/81 = 4 × 1/81 × 1 = 4/81 - Subtract the two like fractions:
18/81 - 4/81 = 18 - 4/81 = 14/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/9-4/81 2/9-8/81 2/18-4/81 6/9-4/81 2/9-12/81 2/27-4/81 10/9-4/81 2/9-20/81 2/45-4/81 14/9-4/81 2/9-28/81 2/63-4/81