Subtract 6/28 from 5/80, Solve 5/80

Subtract 6/28 from 5/80

5/80 - 6/28 is -17/112.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 28 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 80 × 7 = 560,
5/80 = 5 × 7/80 × 7 = 35/560
Likewise, for the 2nd fraction, since 28 × 20 = 560,
6/28 = 6 × 20/28 × 20 = 120/560
Subtract the two like fractions:
35/560 - 120/560 = 35 - 120/560 = -85/560
After reducing the fraction, the answer is -17/112

MathStep (Works offline)

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