Subtract 4/40 from 4/98, Solve 4/98

Subtract 4/40 from 4/98

4/98 - 4/40 is -29/490.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 40 is 1960

Next, find the equivalent fraction of both fractional numbers with denominator 1960
For the 1st fraction, since 98 × 20 = 1960,
4/98 = 4 × 20/98 × 20 = 80/1960
Likewise, for the 2nd fraction, since 40 × 49 = 1960,
4/40 = 4 × 49/40 × 49 = 196/1960
Subtract the two like fractions:
80/1960 - 196/1960 = 80 - 196/1960 = -116/1960
After reducing the fraction, the answer is -29/490

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