Subtract 4/54 from 27/42
27/42 - 4/54 is 215/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
27/42 = 27 × 9/42 × 9 = 243/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
4/54 = 4 × 7/54 × 7 = 28/378 - Subtract the two like fractions:
243/378 - 28/378 = 243 - 28/378 = 215/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/42-4/54 27/42-8/54 27/84-4/54 81/42-4/54 27/42-12/54 27/42-20/54 27/42-28/54