Subtract 28/98 from 18/20
18/20 - 28/98 is 43/70.
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,
18/20 = 18 × 49/20 × 49 = 882/980 - Likewise, for the 2nd fraction, since 98 × 10 = 980,
28/98 = 28 × 10/98 × 10 = 280/980 - Subtract the two like fractions:
882/980 - 280/980 = 882 - 280/980 = 602/980 - After reducing the fraction, the answer is 43/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20-28/98 18/20-56/98 18/40-28/98 54/20-28/98 18/20-84/98 18/60-28/98 90/20-28/98