Subtract 20/6 from 21/98
1st number: 21/98, 2nd number: 3 2/6
21/98 - 20/6 is -131/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 6 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 98 × 3 = 294,
21/98 = 21 × 3/98 × 3 = 63/294 - Likewise, for the 2nd fraction, since 6 × 49 = 294,
20/6 = 20 × 49/6 × 49 = 980/294 - Subtract the two like fractions:
63/294 - 980/294 = 63 - 980/294 = -917/294 - After reducing the fraction, the answer is -131/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98-20/6 21/98-40/6 21/98-20/12 63/98-20/6 21/98-60/6 21/98-20/18 21/98-20/30 21/98-20/42