Subtract 81/12 from 20/98
1st number: 20/98, 2nd number: 6 9/12
20/98 - 81/12 is -1283/196.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 12 is 588
Next, find the equivalent fraction of both fractional numbers with denominator 588 - For the 1st fraction, since 98 × 6 = 588,
20/98 = 20 × 6/98 × 6 = 120/588 - Likewise, for the 2nd fraction, since 12 × 49 = 588,
81/12 = 81 × 49/12 × 49 = 3969/588 - Subtract the two like fractions:
120/588 - 3969/588 = 120 - 3969/588 = -3849/588 - After reducing the fraction, the answer is -1283/196
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/98-81/12 20/98-81/24 60/98-81/12 20/98-81/36 20/98-81/60 20/98-81/84