Subtract 10/20 from 70/98
70/98 - 10/20 is 3/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 98 × 10 = 980,
70/98 = 70 × 10/98 × 10 = 700/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
10/20 = 10 × 49/20 × 49 = 490/980 - Subtract the two like fractions:
700/980 - 490/980 = 700 - 490/980 = 210/980 - After reducing the fraction, the answer is 3/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/98-10/40 70/98-30/20 70/98-10/60 70/98-50/20 70/98-70/20