Subtract 27/42 from 7/14
7/14 - 27/42 is -1/7.
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,
7/14 = 7 × 3/14 × 3 = 21/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
27/42 = 27 × 1/42 × 1 = 27/42 - Subtract the two like fractions:
21/42 - 27/42 = 21 - 27/42 = -6/42 - After reducing the fraction, the answer is -1/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 7/14-54/42 7/28-27/42 7/14-27/84 21/14-27/42 7/14-81/42 7/42-27/42 35/14-27/42 7/70-27/42 49/14-27/42 7/98-27/42