Add 6/81 and 12/18
6/81 + 12/18 is 20/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 18 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
6/81 = 6 × 2/81 × 2 = 12/162 - Likewise, for the 2nd fraction, since 18 × 9 = 162,
12/18 = 12 × 9/18 × 9 = 108/162 - Add the two like fractions:
12/162 + 108/162 = 12 + 108/162 = 120/162 - 120/162 simplified gives 20/27
- So, 6/81 + 12/18 = 20/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/81+12/18 6/81+24/18 6/81+12/36 18/81+12/18 6/81+36/18 6/81+12/54 30/81+12/18 6/81+60/18 6/81+12/90 42/81+12/18 6/81+84/18