Subtract 98/49 from 8/42, Solve 8/42

Subtract 98/49 from 8/42

1^st number: 8/42, 2^nd number: 2 0/49

8/42 - 98/49 is -38/21.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 49 is 294

Next, find the equivalent fraction of both fractional numbers with denominator 294
For the 1st fraction, since 42 × 7 = 294,
8/42 = 8 × 7/42 × 7 = 56/294
Likewise, for the 2nd fraction, since 49 × 6 = 294,
98/49 = 98 × 6/49 × 6 = 588/294
Subtract the two like fractions:
56/294 - 588/294 = 56 - 588/294 = -532/294
After reducing the fraction, the answer is -38/21

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