Subtract 81/14 from 1/18
1st number: 1/18, 2nd number: 5 11/14
1/18 - 81/14 is -361/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 14 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
1/18 = 1 × 7/18 × 7 = 7/126 - Likewise, for the 2nd fraction, since 14 × 9 = 126,
81/14 = 81 × 9/14 × 9 = 729/126 - Subtract the two like fractions:
7/126 - 729/126 = 7 - 729/126 = -722/126 - After reducing the fraction, the answer is -361/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18-81/14 1/36-81/14 1/18-81/28 3/18-81/14 1/54-81/14 1/18-81/42 5/18-81/14 1/90-81/14 1/18-81/70 7/18-81/14 1/18-81/98