Add 21/98 and 18/9
1st number: 21/98, 2nd number: 2 0/9
21/98 + 18/9 is 31/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 9 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 98 × 9 = 882,
21/98 = 21 × 9/98 × 9 = 189/882 - Likewise, for the 2nd fraction, since 9 × 98 = 882,
18/9 = 18 × 98/9 × 98 = 1764/882 - Add the two like fractions:
189/882 + 1764/882 = 189 + 1764/882 = 1953/882 - 1953/882 simplified gives 31/14
- So, 21/98 + 18/9 = 31/14
In mixed form: 23/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98+18/9 21/98+36/9 63/98+18/9 21/98+54/9 21/98+18/27 21/98+90/9 21/98+18/45 21/98+18/63