Subtract 5/7 from 81/54
1st number: 1 27/54, 2nd number: 5/7
81/54 - 5/7 is 11/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 7 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
81/54 = 81 × 7/54 × 7 = 567/378 - Likewise, for the 2nd fraction, since 7 × 54 = 378,
5/7 = 5 × 54/7 × 54 = 270/378 - Subtract the two like fractions:
567/378 - 270/378 = 567 - 270/378 = 297/378 - After reducing the fraction, the answer is 11/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/54-10/7 81/54-5/14 81/54-15/7 81/54-5/21 81/54-25/7 81/54-5/35 81/54-35/7 81/54-5/49