Subtract 81/84 from 84/98
84/98 - 81/84 is -3/28.
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,
84/98 = 84 × 6/98 × 6 = 504/588 - Likewise, for the 2nd fraction, since 84 × 7 = 588,
81/84 = 81 × 7/84 × 7 = 567/588 - Subtract the two like fractions:
504/588 - 567/588 = 504 - 567/588 = -63/588 - After reducing the fraction, the answer is -3/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: