Subtract 81/84 from 42/98
42/98 - 81/84 is -15/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 84 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 84 × 7 = 588,
81/84 = 81 × 7/84 × 7 = 567/588 - Subtract the two like fractions:
252/588 - 567/588 = 252 - 567/588 = -315/588 - After reducing the fraction, the answer is -15/28
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Related: 84/98-81/84