Subtract 4/7 from 81/6
1st number: 13 3/6, 2nd number: 4/7
81/6 - 4/7 is 181/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
81/6 = 81 × 7/6 × 7 = 567/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
4/7 = 4 × 6/7 × 6 = 24/42 - Subtract the two like fractions:
567/42 - 24/42 = 567 - 24/42 = 543/42 - After reducing the fraction, the answer is 181/14
- In mixed form: 1213/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/6-8/7 81/12-4/7 81/6-4/14 81/6-12/7 81/18-4/7 81/6-4/21 81/6-20/7 81/30-4/7 81/6-4/35 81/6-28/7 81/42-4/7 81/6-4/49