Subtract 40/5 from 9/98, Solve 9/98

Subtract 40/5 from 9/98

1^st number: 9/98, 2^nd number: 8 0/5

9/98 - 40/5 is -775/98.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 5 is 490

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 98 × 5 = 490,
9/98 = 9 × 5/98 × 5 = 45/490
Likewise, for the 2nd fraction, since 5 × 98 = 490,
40/5 = 40 × 98/5 × 98 = 3920/490
Subtract the two like fractions:
45/490 - 3920/490 = 45 - 3920/490 = -3875/490
After reducing the fraction, the answer is -775/98

MathStep (Works offline)

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