Subtract 3/12 from 18/98, Solve 18/98

Subtract 3/12 from 18/98

18/98 - 3/12 is -13/196.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 12 is 588

Next, find the equivalent fraction of both fractional numbers with denominator 588
For the 1st fraction, since 98 × 6 = 588,
18/98 = 18 × 6/98 × 6 = 108/588
Likewise, for the 2nd fraction, since 12 × 49 = 588,
3/12 = 3 × 49/12 × 49 = 147/588
Subtract the two like fractions:
108/588 - 147/588 = 108 - 147/588 = -39/588
After reducing the fraction, the answer is -13/196

MathStep (Works offline)

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