Subtract 7/9 from 90/98, Solve 90/98

Subtract 7/9 from 90/98

90/98 - 7/9 is 62/441.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 9 is 882

Next, find the equivalent fraction of both fractional numbers with denominator 882
For the 1st fraction, since 98 × 9 = 882,
90/98 = 90 × 9/98 × 9 = 810/882
Likewise, for the 2nd fraction, since 9 × 98 = 882,
7/9 = 7 × 98/9 × 98 = 686/882
Subtract the two like fractions:
810/882 - 686/882 = 810 - 686/882 = 124/882
After reducing the fraction, the answer is 62/441

MathStep (Works offline)

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