Subtract 1/81 from 5/84
5/84 - 1/81 is 107/2268.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 84 × 27 = 2268,
5/84 = 5 × 27/84 × 27 = 135/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
1/81 = 1 × 28/81 × 28 = 28/2268 - Subtract the two like fractions:
135/2268 - 28/2268 = 135 - 28/2268 = 107/2268
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/84-1/81 5/84-2/81 15/84-1/81 5/84-3/81 25/84-1/81 5/84-5/81 35/84-1/81 5/84-7/81