Subtract 27/4 from 3/42
1st number: 3/42, 2nd number: 6 3/4
3/42 - 27/4 is -187/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
3/42 = 3 × 2/42 × 2 = 6/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
27/4 = 27 × 21/4 × 21 = 567/84 - Subtract the two like fractions:
6/84 - 567/84 = 6 - 567/84 = -561/84 - After reducing the fraction, the answer is -187/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/42-27/4 3/42-54/4 3/84-27/4 3/42-27/8 9/42-27/4 3/42-81/4 3/42-27/12 15/42-27/4 3/42-27/20 21/42-27/4 3/42-27/28