Subtract 80/49 from 21/98
1st number: 21/98, 2nd number: 1 31/49
21/98 - 80/49 is -139/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 49 is 98
Next, find the equivalent fraction of both fractional numbers with denominator 98 - For the 1st fraction, since 98 × 1 = 98,
21/98 = 21 × 1/98 × 1 = 21/98 - Likewise, for the 2nd fraction, since 49 × 2 = 98,
80/49 = 80 × 2/49 × 2 = 160/98 - Subtract the two like fractions:
21/98 - 160/98 = 21 - 160/98 = -139/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98-80/49 21/98-80/98 63/98-80/49