Subtract 21/98 from 18/12
1st number: 1 6/12, 2nd number: 21/98
18/12 - 21/98 is 9/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 98 is 588
Next, find the equivalent fraction of both fractional numbers with denominator 588 - For the 1st fraction, since 12 × 49 = 588,
18/12 = 18 × 49/12 × 49 = 882/588 - Likewise, for the 2nd fraction, since 98 × 6 = 588,
21/98 = 21 × 6/98 × 6 = 126/588 - Subtract the two like fractions:
882/588 - 126/588 = 882 - 126/588 = 756/588 - After reducing the fraction, the answer is 9/7
- In mixed form: 12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-21/98 18/12-42/98 18/24-21/98 54/12-21/98 18/12-63/98 18/36-21/98 90/12-21/98 18/60-21/98 18/84-21/98