Subtract 1/81 from 4/12
4/12 - 1/81 is 26/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 12 × 27 = 324,
4/12 = 4 × 27/12 × 27 = 108/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
1/81 = 1 × 4/81 × 4 = 4/324 - Subtract the two like fractions:
108/324 - 4/324 = 108 - 4/324 = 104/324 - After reducing the fraction, the answer is 26/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/12-1/81 4/12-2/81 4/24-1/81 4/12-3/81 4/36-1/81 20/12-1/81 4/12-5/81 4/60-1/81 28/12-1/81 4/12-7/81 4/84-1/81