Subtract 7/98 from 7/20
7/20 - 7/98 is 39/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 98 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
7/20 = 7 × 49/20 × 49 = 343/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
7/98 = 7 × 10/98 × 10 = 70/980 - Subtract the two like fractions:
343/980 - 70/980 = 343 - 70/980 = 273/980 - After reducing the fraction, the answer is 39/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20-7/98 7/20-14/98 7/40-7/98 21/20-7/98 7/20-21/98 7/60-7/98 35/20-7/98 7/20-35/98 49/20-7/98 7/20-49/98