Subtract 20/70 from 10/7
1st number: 1 3/7, 2nd number: 20/70
10/7 - 20/70 is 8/7.
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,
10/7 = 10 × 10/7 × 10 = 100/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
20/70 = 20 × 1/70 × 1 = 20/70 - Subtract the two like fractions:
100/70 - 20/70 = 100 - 20/70 = 80/70 - After reducing the fraction, the answer is 8/7
- In mixed form: 11/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/7-20/70 10/7-40/70 10/14-20/70 30/7-20/70 10/7-60/70 10/21-20/70 50/7-20/70 10/35-20/70 70/7-20/70 10/49-20/70