Subtract 81/18 from 5/14
1st number: 5/14, 2nd number: 4 9/18
5/14 - 81/18 is -29/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 14 × 9 = 126,
5/14 = 5 × 9/14 × 9 = 45/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
81/18 = 81 × 7/18 × 7 = 567/126 - Subtract the two like fractions:
45/126 - 567/126 = 45 - 567/126 = -522/126 - After reducing the fraction, the answer is -29/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/14-81/18 5/28-81/18 5/14-81/36 15/14-81/18 5/42-81/18 5/14-81/54 25/14-81/18 5/70-81/18 5/14-81/90 35/14-81/18 5/98-81/18