Subtract 49/54 from 4/7
4/7 - 49/54 is -127/378.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 7 × 54 = 378,
4/7 = 4 × 54/7 × 54 = 216/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
49/54 = 49 × 7/54 × 7 = 343/378 - Subtract the two like fractions:
216/378 - 343/378 = 216 - 343/378 = -127/378
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7-49/54 4/7-98/54 4/14-49/54 12/7-49/54 4/21-49/54 20/7-49/54 4/35-49/54 28/7-49/54 4/49-49/54