Add 12/18 and 42/98
12/18 + 42/98 is 23/21.
Steps for adding 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,
12/18 = 12 × 49/18 × 49 = 588/882 - Likewise, for the 2nd fraction, since 98 × 9 = 882,
42/98 = 42 × 9/98 × 9 = 378/882 - Add the two like fractions:
588/882 + 378/882 = 588 + 378/882 = 966/882 - 966/882 simplified gives 23/21
- So, 12/18 + 42/98 = 23/21
In mixed form: 12/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18+42/98 12/18+84/98 12/36+42/98 36/18+42/98 12/54+42/98 60/18+42/98 12/90+42/98 84/18+42/98