Subtract 72/98 from 5/40, Solve 5/40

Subtract 72/98 from 5/40

5/40 - 72/98 is -239/392.

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

Next, find the equivalent fraction of both fractional numbers with denominator 1960
For the 1st fraction, since 40 × 49 = 1960,
5/40 = 5 × 49/40 × 49 = 245/1960
Likewise, for the 2nd fraction, since 98 × 20 = 1960,
72/98 = 72 × 20/98 × 20 = 1440/1960
Subtract the two like fractions:
245/1960 - 1440/1960 = 245 - 1440/1960 = -1195/1960
After reducing the fraction, the answer is -239/392

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