Subtract 21/98 from 1/18
1/18 - 21/98 is -10/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 98 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 18 × 49 = 882,
1/18 = 1 × 49/18 × 49 = 49/882 - Likewise, for the 2nd fraction, since 98 × 9 = 882,
21/98 = 21 × 9/98 × 9 = 189/882 - Subtract the two like fractions:
49/882 - 189/882 = 49 - 189/882 = -140/882 - After reducing the fraction, the answer is -10/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18-21/98 1/18-42/98 1/36-21/98 3/18-21/98 1/18-63/98 1/54-21/98 5/18-21/98 1/90-21/98 7/18-21/98