Subtract 90/14 from 81/6
1st number: 13 3/6, 2nd number: 6 6/14
81/6 - 90/14 is 99/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 14 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 14 × 3 = 42,
90/14 = 90 × 3/14 × 3 = 270/42 - Subtract the two like fractions:
567/42 - 270/42 = 567 - 270/42 = 297/42 - After reducing the fraction, the answer is 99/14
- In mixed form: 71/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/12-90/14 81/6-90/28 81/18-90/14 81/6-90/42 81/30-90/14 81/6-90/70 81/42-90/14 81/6-90/98