Subtract 27/70 from 20/7
1st number: 2 6/7, 2nd number: 27/70
20/7 - 27/70 is 173/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
20/7 = 20 × 10/7 × 10 = 200/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
27/70 = 27 × 1/70 × 1 = 27/70 - Subtract the two like fractions:
200/70 - 27/70 = 200 - 27/70 = 173/70 - In mixed form: 233/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7-27/70 20/7-54/70 20/14-27/70 60/7-27/70 20/7-81/70 20/21-27/70 20/35-27/70 20/49-27/70