Subtract 80/30 from 4/98, Solve 4/98

Subtract 80/30 from 4/98

1^st number: 4/98, 2^nd number: 2 20/30

4/98 - 80/30 is -386/147.

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,
80/30 = 80 × 49/30 × 49 = 3920/1470
Subtract the two like fractions:
60/1470 - 3920/1470 = 60 - 3920/1470 = -3860/1470
After reducing the fraction, the answer is -386/147

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