Subtract 20/54 from 10/15, Solve 10/15

Subtract 20/54 from 10/15

10/15 - 20/54 is 8/27.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 15 × 18 = 270,
10/15 = 10 × 18/15 × 18 = 180/270
Likewise, for the 2nd fraction, since 54 × 5 = 270,
20/54 = 20 × 5/54 × 5 = 100/270
Subtract the two like fractions:
180/270 - 100/270 = 180 - 100/270 = 80/270
After reducing the fraction, the answer is 8/27

MathStep (Works offline)

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