Subtract 81/42 from 5/14
1st number: 5/14, 2nd number: 1 39/42
5/14 - 81/42 is -11/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
5/14 = 5 × 3/14 × 3 = 15/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
81/42 = 81 × 1/42 × 1 = 81/42 - Subtract the two like fractions:
15/42 - 81/42 = 15 - 81/42 = -66/42 - After reducing the fraction, the answer is -11/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/14-81/42 5/28-81/42 5/14-81/84 15/14-81/42 5/42-81/42 25/14-81/42 5/70-81/42 35/14-81/42 5/98-81/42