Subtract 10/81 from 10/12
10/12 - 10/81 is 115/162.
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,
10/12 = 10 × 27/12 × 27 = 270/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
10/81 = 10 × 4/81 × 4 = 40/324 - Subtract the two like fractions:
270/324 - 40/324 = 270 - 40/324 = 230/324 - After reducing the fraction, the answer is 115/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/12-10/81 10/12-20/81 10/24-10/81 30/12-10/81 10/12-30/81 10/36-10/81 50/12-10/81 10/12-50/81 10/60-10/81 70/12-10/81 10/12-70/81 10/84-10/81