Subtract 3/81 from 5/9
5/9 - 3/81 is 14/27.
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,
5/9 = 5 × 9/9 × 9 = 45/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
3/81 = 3 × 1/81 × 1 = 3/81 - Subtract the two like fractions:
45/81 - 3/81 = 45 - 3/81 = 42/81 - After reducing the fraction, the answer is 14/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/9-3/81 5/9-6/81 5/18-3/81 15/9-3/81 5/9-9/81 5/27-3/81 25/9-3/81 5/9-15/81 5/45-3/81 35/9-3/81 5/9-21/81 5/63-3/81