Add 21/6 and 84/9
1st number: 3 3/6, 2nd number: 9 3/9
21/6 + 84/9 is 77/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 6 × 3 = 18,
21/6 = 21 × 3/6 × 3 = 63/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
84/9 = 84 × 2/9 × 2 = 168/18 - Add the two like fractions:
63/18 + 168/18 = 63 + 168/18 = 231/18 - 231/18 simplified gives 77/6
- So, 21/6 + 84/9 = 77/6
In mixed form: 125/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/6+84/9 21/12+84/9 21/6+84/18 63/6+84/9 21/18+84/9 21/6+84/27 21/30+84/9 21/6+84/45 21/42+84/9 21/6+84/63