Subtract 2/10 from 81/7
1st number: 11 4/7, 2nd number: 2/10
81/7 - 2/10 is 398/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
81/7 = 81 × 10/7 × 10 = 810/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
2/10 = 2 × 7/10 × 7 = 14/70 - Subtract the two like fractions:
810/70 - 14/70 = 810 - 14/70 = 796/70 - After reducing the fraction, the answer is 398/35
- In mixed form: 1113/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/7-4/10 81/14-2/10 81/7-2/20 81/7-6/10 81/21-2/10 81/7-2/30 81/35-2/10 81/7-2/50 81/7-14/10 81/49-2/10 81/7-2/70