Subtract 63/42 from 20/98, Solve 20/98

Subtract 63/42 from 20/98

1^st number: 20/98, 2^nd number: 1 21/42

20/98 - 63/42 is -127/98.

Find the least common denominator or LCM of the two denominators:
LCM of 98 and 42 is 294

Next, find the equivalent fraction of both fractional numbers with denominator 294
For the 1st fraction, since 98 × 3 = 294,
20/98 = 20 × 3/98 × 3 = 60/294
Likewise, for the 2nd fraction, since 42 × 7 = 294,
63/42 = 63 × 7/42 × 7 = 441/294
Subtract the two like fractions:
60/294 - 441/294 = 60 - 441/294 = -381/294
After reducing the fraction, the answer is -127/98

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