Subtract 3/81 from 1/3
1/3 - 3/81 is 8/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
1/3 = 1 × 27/3 × 27 = 27/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
3/81 = 3 × 1/81 × 1 = 3/81 - Subtract the two like fractions:
27/81 - 3/81 = 27 - 3/81 = 24/81 - After reducing the fraction, the answer is 8/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/3-3/81 1/3-6/81 1/6-3/81 1/3-9/81 1/9-3/81 5/3-3/81 1/3-15/81 1/15-3/81 7/3-3/81 1/3-21/81 1/21-3/81