Subtract 80/10 from 12/98, Solve 12/98

Subtract 80/10 from 12/98

1^st number: 12/98, 2^nd number: 8 0/10

12/98 - 80/10 is -386/49.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 10 is 490

Next, find the equivalent fraction of both fractional numbers with denominator 490
For the 1st fraction, since 98 × 5 = 490,
12/98 = 12 × 5/98 × 5 = 60/490
Likewise, for the 2nd fraction, since 10 × 49 = 490,
80/10 = 80 × 49/10 × 49 = 3920/490
Subtract the two like fractions:
60/490 - 3920/490 = 60 - 3920/490 = -3860/490
After reducing the fraction, the answer is -386/49

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