Add 4/6 and 21/81
4/6 + 21/81 is 25/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 6 × 27 = 162,
4/6 = 4 × 27/6 × 27 = 108/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
21/81 = 21 × 2/81 × 2 = 42/162 - Add the two like fractions:
108/162 + 42/162 = 108 + 42/162 = 150/162 - 150/162 simplified gives 25/27
- So, 4/6 + 21/81 = 25/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/6+21/81 4/6+42/81 4/12+21/81 12/6+21/81 4/6+63/81 4/18+21/81 20/6+21/81 4/30+21/81 28/6+21/81 4/42+21/81