Subtract 4/81 from 1/4
1/4 - 4/81 is 65/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
1/4 = 1 × 81/4 × 81 = 81/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
4/81 = 4 × 4/81 × 4 = 16/324 - Subtract the two like fractions:
81/324 - 16/324 = 81 - 16/324 = 65/324
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/4-4/81 1/4-8/81 1/8-4/81 3/4-4/81 1/4-12/81 1/12-4/81 5/4-4/81 1/4-20/81 1/20-4/81 7/4-4/81 1/4-28/81 1/28-4/81