Add 21/98 and 12/18
21/98 + 12/18 is 37/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 18 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 18 × 49 = 882,
12/18 = 12 × 49/18 × 49 = 588/882 - Add the two like fractions:
189/882 + 588/882 = 189 + 588/882 = 777/882 - 777/882 simplified gives 37/42
- So, 21/98 + 12/18 = 37/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/98+12/18 21/98+24/18 21/98+12/36 63/98+12/18 21/98+36/18 21/98+12/54 21/98+60/18 21/98+12/90 21/98+84/18