Subtract 1/80 from 7/98, Solve 7/98

Subtract 1/80 from 7/98

7/98 - 1/80 is 33/560.

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

Next, find the equivalent fraction of both fractional numbers with denominator 3920
For the 1st fraction, since 98 × 40 = 3920,
7/98 = 7 × 40/98 × 40 = 280/3920
Likewise, for the 2nd fraction, since 80 × 49 = 3920,
1/80 = 1 × 49/80 × 49 = 49/3920
Subtract the two like fractions:
280/3920 - 49/3920 = 280 - 49/3920 = 231/3920
After reducing the fraction, the answer is 33/560

MathStep (Works offline)

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