Subtract 16/12 from 21/98, Solve 21/98

Subtract 16/12 from 21/98

1^st number: 21/98, 2^nd number: 1 4/12

21/98 - 16/12 is -47/42.

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,
21/98 = 21 × 6/98 × 6 = 126/588
Likewise, for the 2nd fraction, since 12 × 49 = 588,
16/12 = 16 × 49/12 × 49 = 784/588
Subtract the two like fractions:
126/588 - 784/588 = 126 - 784/588 = -658/588
After reducing the fraction, the answer is -47/42

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