Subtract 70/98 from 2/21
2/21 - 70/98 is -13/21.
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,
2/21 = 2 × 14/21 × 14 = 28/294 - Likewise, for the 2nd fraction, since 98 × 3 = 294,
70/98 = 70 × 3/98 × 3 = 210/294 - Subtract the two like fractions:
28/294 - 210/294 = 28 - 210/294 = -182/294 - After reducing the fraction, the answer is -13/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21-70/98 2/42-70/98 6/21-70/98 2/63-70/98 10/21-70/98 14/21-70/98