Subtract 20/15 from 9/98, Solve 9/98

Subtract 20/15 from 9/98

1^st number: 9/98, 2^nd number: 1 5/15

9/98 - 20/15 is -365/294.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 15 is 1470

Next, find the equivalent fraction of both fractional numbers with denominator 1470
For the 1st fraction, since 98 × 15 = 1470,
9/98 = 9 × 15/98 × 15 = 135/1470
Likewise, for the 2nd fraction, since 15 × 98 = 1470,
20/15 = 20 × 98/15 × 98 = 1960/1470
Subtract the two like fractions:
135/1470 - 1960/1470 = 135 - 1960/1470 = -1825/1470
After reducing the fraction, the answer is -365/294

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