Subtract 4/9 from 2/81
2/81 - 4/9 is -34/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 9 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
2/81 = 2 × 1/81 × 1 = 2/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
4/9 = 4 × 9/9 × 9 = 36/81 - Subtract the two like fractions:
2/81 - 36/81 = 2 - 36/81 = -34/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/81-4/9 2/81-8/9 2/81-4/18 6/81-4/9 2/81-12/9 2/81-4/27 10/81-4/9 2/81-20/9 2/81-4/45 14/81-4/9 2/81-28/9 2/81-4/63