Subtract 12/30 from 28/98, Solve 28/98

Subtract 12/30 from 28/98

28/98 - 12/30 is -4/35.

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,
28/98 = 28 × 15/98 × 15 = 420/1470
Likewise, for the 2nd fraction, since 30 × 49 = 1470,
12/30 = 12 × 49/30 × 49 = 588/1470
Subtract the two like fractions:
420/1470 - 588/1470 = 420 - 588/1470 = -168/1470
After reducing the fraction, the answer is -4/35

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