Subtract 2/98 from 18/40
18/40 - 2/98 is 421/980.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 98 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 40 × 49 = 1960,
18/40 = 18 × 49/40 × 49 = 882/1960 - Likewise, for the 2nd fraction, since 98 × 20 = 1960,
2/98 = 2 × 20/98 × 20 = 40/1960 - Subtract the two like fractions:
882/1960 - 40/1960 = 882 - 40/1960 = 842/1960 - After reducing the fraction, the answer is 421/980
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40-2/98 18/40-4/98 18/80-2/98 54/40-2/98 18/40-6/98 90/40-2/98 18/40-10/98 18/40-14/98