Subtract 15/81 from 1/98, Solve 1/98

Subtract 15/81 from 1/98

1/98 - 15/81 is -463/2646.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 81 is 7938

Next, find the equivalent fraction of both fractional numbers with denominator 7938
For the 1st fraction, since 98 × 81 = 7938,
1/98 = 1 × 81/98 × 81 = 81/7938
Likewise, for the 2nd fraction, since 81 × 98 = 7938,
15/81 = 15 × 98/81 × 98 = 1470/7938
Subtract the two like fractions:
81/7938 - 1470/7938 = 81 - 1470/7938 = -1389/7938
After reducing the fraction, the answer is -463/2646

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