Subtract 6/56 from 20/27, Solve 20/27

Subtract 6/56 from 20/27

20/27 - 6/56 is 479/756.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 56 is 1512

Next, find the equivalent fraction of both fractional numbers with denominator 1512
For the 1st fraction, since 27 × 56 = 1512,
20/27 = 20 × 56/27 × 56 = 1120/1512
Likewise, for the 2nd fraction, since 56 × 27 = 1512,
6/56 = 6 × 27/56 × 27 = 162/1512
Subtract the two like fractions:
1120/1512 - 162/1512 = 1120 - 162/1512 = 958/1512
After reducing the fraction, the answer is 479/756

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad