Subtract 63/42 from 90/98
1st number: 90/98, 2nd number: 1 21/42
90/98 - 63/42 is -57/98.
Steps for subtracting fractions
- 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,
90/98 = 90 × 3/98 × 3 = 270/294 - Likewise, for the 2nd fraction, since 42 × 7 = 294,
63/42 = 63 × 7/42 × 7 = 441/294 - Subtract the two like fractions:
270/294 - 441/294 = 270 - 441/294 = -171/294 - After reducing the fraction, the answer is -57/98
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