Subtract 20/7 from 20/10
1st number: 2 0/10, 2nd number: 2 6/7
20/10 - 20/7 is -6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
20/10 = 20 × 7/10 × 7 = 140/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
20/7 = 20 × 10/7 × 10 = 200/70 - Subtract the two like fractions:
140/70 - 200/70 = 140 - 200/70 = -60/70 - After reducing the fraction, the answer is -6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10-20/7 20/10-40/7 20/10-20/14 60/10-20/7 20/10-60/7 20/30-20/7 20/10-20/21 20/50-20/7 20/10-20/35 20/70-20/7 20/10-20/49