Subtract 42/30 from 4/98, Solve 4/98

Subtract 42/30 from 4/98

1^st number: 4/98, 2^nd number: 1 12/30

4/98 - 42/30 is -333/245.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 30 is 1470

Next, find the equivalent fraction of both fractional numbers with denominator 1470
For the 1st fraction, since 98 × 15 = 1470,
4/98 = 4 × 15/98 × 15 = 60/1470
Likewise, for the 2nd fraction, since 30 × 49 = 1470,
42/30 = 42 × 49/30 × 49 = 2058/1470
Subtract the two like fractions:
60/1470 - 2058/1470 = 60 - 2058/1470 = -1998/1470
After reducing the fraction, the answer is -333/245

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