Subtract 10/54 from 10/80, Solve 10/80

Subtract 10/54 from 10/80

10/80 - 10/54 is -13/216.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 54 is 2160

Next, find the equivalent fraction of both fractional numbers with denominator 2160
For the 1st fraction, since 80 × 27 = 2160,
10/80 = 10 × 27/80 × 27 = 270/2160
Likewise, for the 2nd fraction, since 54 × 40 = 2160,
10/54 = 10 × 40/54 × 40 = 400/2160
Subtract the two like fractions:
270/2160 - 400/2160 = 270 - 400/2160 = -130/2160
After reducing the fraction, the answer is -13/216

MathStep (Works offline)

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