Subtract 81/80 from 56/7
1st number: 8 0/7, 2nd number: 1 1/80
56/7 - 81/80 is 559/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
56/7 = 56 × 80/7 × 80 = 4480/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
81/80 = 81 × 7/80 × 7 = 567/560 - Subtract the two like fractions:
4480/560 - 567/560 = 4480 - 567/560 = 3913/560 - After reducing the fraction, the answer is 559/80
- In mixed form: 679/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14-81/80 56/21-81/80 56/35-81/80 56/49-81/80