Subtract 50/98 from 9/90, Solve 9/90

Subtract 50/98 from 9/90

9/90 - 50/98 is -201/490.

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

Next, find the equivalent fraction of both fractional numbers with denominator 4410
For the 1st fraction, since 90 × 49 = 4410,
9/90 = 9 × 49/90 × 49 = 441/4410
Likewise, for the 2nd fraction, since 98 × 45 = 4410,
50/98 = 50 × 45/98 × 45 = 2250/4410
Subtract the two like fractions:
441/4410 - 2250/4410 = 441 - 2250/4410 = -1809/4410
After reducing the fraction, the answer is -201/490

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