Subtract 40/54 from 6/7
6/7 - 40/54 is 22/189.
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,
6/7 = 6 × 54/7 × 54 = 324/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
40/54 = 40 × 7/54 × 7 = 280/378 - Subtract the two like fractions:
324/378 - 280/378 = 324 - 280/378 = 44/378 - After reducing the fraction, the answer is 22/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/7-40/54 6/7-80/54 6/14-40/54 18/7-40/54 6/21-40/54 30/7-40/54 6/35-40/54 42/7-40/54 6/49-40/54