Add 5/6 and 9/21
5/6 + 9/21 is 53/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
5/6 = 5 × 7/6 × 7 = 35/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
9/21 = 9 × 2/21 × 2 = 18/42 - Add the two like fractions:
35/42 + 18/42 = 35 + 18/42 = 53/42 - So, 5/6 + 9/21 = 53/42
In mixed form: 111/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/6+9/21 5/6+18/21 5/12+9/21 5/6+9/42 15/6+9/21 5/6+27/21 5/18+9/21 5/6+9/63 25/6+9/21 5/6+45/21 5/30+9/21 35/6+9/21 5/6+63/21 5/42+9/21