Subtract 27/6 from 27/42
1st number: 27/42, 2nd number: 4 3/6
27/42 - 27/6 is -27/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
27/42 = 27 × 1/42 × 1 = 27/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
27/6 = 27 × 7/6 × 7 = 189/42 - Subtract the two like fractions:
27/42 - 189/42 = 27 - 189/42 = -162/42 - After reducing the fraction, the answer is -27/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-27/6 27/42-54/6 27/84-27/6 27/42-27/12 81/42-27/6 27/42-81/6 27/42-27/18 27/42-27/30 27/42-27/42