Subtract 5/20 from 20/7
1st number: 2 6/7, 2nd number: 5/20
20/7 - 5/20 is 73/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
20/7 = 20 × 20/7 × 20 = 400/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
5/20 = 5 × 7/20 × 7 = 35/140 - Subtract the two like fractions:
400/140 - 35/140 = 400 - 35/140 = 365/140 - After reducing the fraction, the answer is 73/28
- In mixed form: 217/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7-5/20 20/7-10/20 20/14-5/20 20/7-5/40 60/7-5/20 20/7-15/20 20/21-5/20 20/7-5/60 20/7-25/20 20/35-5/20 20/7-35/20 20/49-5/20