Subtract 27/12 from 27/70
1st number: 27/70, 2nd number: 2 3/12
27/70 - 27/12 is -261/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
27/70 = 27 × 6/70 × 6 = 162/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
27/12 = 27 × 35/12 × 35 = 945/420 - Subtract the two like fractions:
162/420 - 945/420 = 162 - 945/420 = -783/420 - After reducing the fraction, the answer is -261/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/70-27/12 27/70-54/12 27/70-27/24 81/70-27/12 27/70-81/12 27/70-27/36 27/70-27/60 27/70-27/84