Add 5/81 and 20/9
1st number: 5/81, 2nd number: 2 2/9
5/81 + 20/9 is 185/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 9 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
5/81 = 5 × 1/81 × 1 = 5/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
20/9 = 20 × 9/9 × 9 = 180/81 - Add the two like fractions:
5/81 + 180/81 = 5 + 180/81 = 185/81 - So, 5/81 + 20/9 = 185/81
In mixed form: 223/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/81+20/9 5/81+40/9 5/81+20/18 15/81+20/9 5/81+60/9 5/81+20/27 25/81+20/9 5/81+20/45 35/81+20/9 5/81+20/63