Subtract 15/81 from 35/12
1st number: 2 11/12, 2nd number: 15/81
35/12 - 15/81 is 295/108.
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,
35/12 = 35 × 27/12 × 27 = 945/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
15/81 = 15 × 4/81 × 4 = 60/324 - Subtract the two like fractions:
945/324 - 60/324 = 945 - 60/324 = 885/324 - After reducing the fraction, the answer is 295/108
- In mixed form: 279/108
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12-15/81 35/12-30/81 35/24-15/81 35/12-45/81 35/36-15/81 35/12-75/81 35/60-15/81 35/84-15/81