Add 20/81 and 6/9
20/81 + 6/9 is 74/81.
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,
20/81 = 20 × 1/81 × 1 = 20/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
6/9 = 6 × 9/9 × 9 = 54/81 - Add the two like fractions:
20/81 + 54/81 = 20 + 54/81 = 74/81 - So, 20/81 + 6/9 = 74/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/81+6/9 20/81+12/9 20/81+6/18 60/81+6/9 20/81+18/9 20/81+6/27 20/81+30/9 20/81+6/45 20/81+42/9 20/81+6/63