Subtract 21/98 from 5/21
5/21 - 21/98 is 1/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 98 is 294
Next, find the equivalent fraction of both fractional numbers with denominator 294 - For the 1st fraction, since 21 × 14 = 294,
5/21 = 5 × 14/21 × 14 = 70/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
21/98 = 21 × 3/98 × 3 = 63/294 - Subtract the two like fractions:
70/294 - 63/294 = 70 - 63/294 = 7/294 - After reducing the fraction, the answer is 1/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/21-21/98 5/21-42/98 5/42-21/98 15/21-21/98 5/21-63/98 5/63-21/98 25/21-21/98 35/21-21/98