Add 8/9 and 20/81
8/9 + 20/81 is 92/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
8/9 = 8 × 9/9 × 9 = 72/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
20/81 = 20 × 1/81 × 1 = 20/81 - Add the two like fractions:
72/81 + 20/81 = 72 + 20/81 = 92/81 - So, 8/9 + 20/81 = 92/81
In mixed form: 111/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/9+20/81 8/9+40/81 8/18+20/81 24/9+20/81 8/9+60/81 8/27+20/81 40/9+20/81 8/45+20/81 56/9+20/81 8/63+20/81