Subtract 56/21 from 8/54
1st number: 8/54, 2nd number: 2 14/21
8/54 - 56/21 is -68/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
8/54 = 8 × 7/54 × 7 = 56/378 - Likewise, for the 2nd fraction, since 21 × 18 = 378,
56/21 = 56 × 18/21 × 18 = 1008/378 - Subtract the two like fractions:
56/378 - 1008/378 = 56 - 1008/378 = -952/378 - After reducing the fraction, the answer is -68/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/54-56/21 8/54-56/42 24/54-56/21 8/54-56/63 40/54-56/21 56/54-56/21