Subtract 15/12 from 42/98, Solve 42/98

Subtract 15/12 from 42/98

1^st number: 42/98, 2^nd number: 1 3/12

42/98 - 15/12 is -23/28.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 12 is 588

Next, find the equivalent fraction of both fractional numbers with denominator 588
For the 1st fraction, since 98 × 6 = 588,
42/98 = 42 × 6/98 × 6 = 252/588
Likewise, for the 2nd fraction, since 12 × 49 = 588,
15/12 = 15 × 49/12 × 49 = 735/588
Subtract the two like fractions:
252/588 - 735/588 = 252 - 735/588 = -483/588
After reducing the fraction, the answer is -23/28

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