Subtract 6/18 from 28/98, Solve 28/98

Subtract 6/18 from 28/98

28/98 - 6/18 is -1/21.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 18 is 882

Next, find the equivalent fraction of both fractional numbers with denominator 882
For the 1st fraction, since 98 × 9 = 882,
28/98 = 28 × 9/98 × 9 = 252/882
Likewise, for the 2nd fraction, since 18 × 49 = 882,
6/18 = 6 × 49/18 × 49 = 294/882
Subtract the two like fractions:
252/882 - 294/882 = 252 - 294/882 = -42/882
After reducing the fraction, the answer is -1/21

MathStep (Works offline)

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