Subtract 70/12 from 35/81
1st number: 35/81, 2nd number: 5 10/12
35/81 - 70/12 is -875/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
35/81 = 35 × 4/81 × 4 = 140/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
70/12 = 70 × 27/12 × 27 = 1890/324 - Subtract the two like fractions:
140/324 - 1890/324 = 140 - 1890/324 = -1750/324 - After reducing the fraction, the answer is -875/162
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/81-70/12 35/81-70/24 35/81-70/36 35/81-70/60 35/81-70/84