Subtract 27/70 from 20/12
1st number: 1 8/12, 2nd number: 27/70
20/12 - 27/70 is 269/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
20/12 = 20 × 35/12 × 35 = 700/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
27/70 = 27 × 6/70 × 6 = 162/420 - Subtract the two like fractions:
700/420 - 162/420 = 700 - 162/420 = 538/420 - After reducing the fraction, the answer is 269/210
- In mixed form: 159/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-27/70 20/12-54/70 20/24-27/70 60/12-27/70 20/12-81/70 20/36-27/70 20/60-27/70 20/84-27/70