Subtract 6/81 from 3/12
3/12 - 6/81 is 19/108.
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,
3/12 = 3 × 27/12 × 27 = 81/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
6/81 = 6 × 4/81 × 4 = 24/324 - Subtract the two like fractions:
81/324 - 24/324 = 81 - 24/324 = 57/324 - After reducing the fraction, the answer is 19/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-6/81 3/12-12/81 3/24-6/81 9/12-6/81 3/12-18/81 3/36-6/81 15/12-6/81 3/12-30/81 3/60-6/81 21/12-6/81 3/12-42/81 3/84-6/81