Subtract 40/70 from 20/7
1st number: 2 6/7, 2nd number: 40/70
20/7 - 40/70 is 16/7.
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,
40/70 = 40 × 1/70 × 1 = 40/70 - Subtract the two like fractions:
200/70 - 40/70 = 200 - 40/70 = 160/70 - After reducing the fraction, the answer is 16/7
- In mixed form: 22/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7-40/70 20/7-80/70 20/14-40/70 60/7-40/70 20/21-40/70 20/35-40/70 20/49-40/70