Subtract 5/81 from 5/28
5/28 - 5/81 is 265/2268.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 28 × 81 = 2268,
5/28 = 5 × 81/28 × 81 = 405/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
5/81 = 5 × 28/81 × 28 = 140/2268 - Subtract the two like fractions:
405/2268 - 140/2268 = 405 - 140/2268 = 265/2268
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/28-5/81 5/28-10/81 5/56-5/81 15/28-5/81 5/28-15/81 5/84-5/81 25/28-5/81 5/28-25/81 35/28-5/81 5/28-35/81