Subtract 54/27 from 1/42
1st number: 1/42, 2nd number: 2 0/27
1/42 - 54/27 is -83/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
1/42 = 1 × 9/42 × 9 = 9/378 - Likewise, for the 2nd fraction, since 27 × 14 = 378,
54/27 = 54 × 14/27 × 14 = 756/378 - Subtract the two like fractions:
9/378 - 756/378 = 9 - 756/378 = -747/378 - After reducing the fraction, the answer is -83/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/42-54/27 1/84-54/27 3/42-54/27 1/42-54/81 5/42-54/27 7/42-54/27