Subtract 8/81 from 5/27
5/27 - 8/81 is 7/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 27 × 3 = 81,
5/27 = 5 × 3/27 × 3 = 15/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
8/81 = 8 × 1/81 × 1 = 8/81 - Subtract the two like fractions:
15/81 - 8/81 = 15 - 8/81 = 7/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/27-8/81 5/27-16/81 5/54-8/81 15/27-8/81 5/27-24/81 5/81-8/81 25/27-8/81 5/27-40/81 35/27-8/81 5/27-56/81