Subtract 42/50 from 7/98, Solve 7/98

Subtract 42/50 from 7/98

7/98 - 42/50 is -269/350.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 50 is 2450

Next, find the equivalent fraction of both fractional numbers with denominator 2450
For the 1st fraction, since 98 × 25 = 2450,
7/98 = 7 × 25/98 × 25 = 175/2450
Likewise, for the 2nd fraction, since 50 × 49 = 2450,
42/50 = 42 × 49/50 × 49 = 2058/2450
Subtract the two like fractions:
175/2450 - 2058/2450 = 175 - 2058/2450 = -1883/2450
After reducing the fraction, the answer is -269/350

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