Add 21/9 and 7/6
1st number: 2 3/9, 2nd number: 1 1/6
21/9 + 7/6 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 6 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
21/9 = 21 × 2/9 × 2 = 42/18 - Likewise, for the 2nd fraction, since 6 × 3 = 18,
7/6 = 7 × 3/6 × 3 = 21/18 - Add the two like fractions:
42/18 + 21/18 = 42 + 21/18 = 63/18 - 63/18 simplified gives 7/2
- So, 21/9 + 7/6 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/9+7/6 21/9+14/6 21/18+7/6 21/9+7/12 63/9+7/6 21/9+21/6 21/27+7/6 21/9+7/18 21/9+35/6 21/45+7/6 21/9+7/30 21/9+49/6 21/63+7/6 21/9+7/42