Subtract 15/98 from 6/80, Solve 6/80

Subtract 15/98 from 6/80

6/80 - 15/98 is -153/1960.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 98 is 3920

Next, find the equivalent fraction of both fractional numbers with denominator 3920
For the 1st fraction, since 80 × 49 = 3920,
6/80 = 6 × 49/80 × 49 = 294/3920
Likewise, for the 2nd fraction, since 98 × 40 = 3920,
15/98 = 15 × 40/98 × 40 = 600/3920
Subtract the two like fractions:
294/3920 - 600/3920 = 294 - 600/3920 = -306/3920
After reducing the fraction, the answer is -153/1960

MathStep (Works offline)

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