Subtract 9/90 from 28/98, Solve 28/98

Subtract 9/90 from 28/98

28/98 - 9/90 is 13/70.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 90 is 4410

Next, find the equivalent fraction of both fractional numbers with denominator 4410
For the 1st fraction, since 98 × 45 = 4410,
28/98 = 28 × 45/98 × 45 = 1260/4410
Likewise, for the 2nd fraction, since 90 × 49 = 4410,
9/90 = 9 × 49/90 × 49 = 441/4410
Subtract the two like fractions:
1260/4410 - 441/4410 = 1260 - 441/4410 = 819/4410
After reducing the fraction, the answer is 13/70

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