Subtract 3/81 from 56/7
1st number: 8 0/7, 2nd number: 3/81
56/7 - 3/81 is 215/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
56/7 = 56 × 81/7 × 81 = 4536/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
3/81 = 3 × 7/81 × 7 = 21/567 - Subtract the two like fractions:
4536/567 - 21/567 = 4536 - 21/567 = 4515/567 - After reducing the fraction, the answer is 215/27
- In mixed form: 726/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-6/81 56/14-3/81 56/7-9/81 56/21-3/81 56/7-15/81 56/35-3/81 56/7-21/81 56/49-3/81