Add 4/15 and 9/81
4/15 + 9/81 is 17/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 15 × 27 = 405,
4/15 = 4 × 27/15 × 27 = 108/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
9/81 = 9 × 5/81 × 5 = 45/405 - Add the two like fractions:
108/405 + 45/405 = 108 + 45/405 = 153/405 - 153/405 simplified gives 17/45
- So, 4/15 + 9/81 = 17/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/15+9/81 4/15+18/81 4/30+9/81 12/15+9/81 4/15+27/81 4/45+9/81 20/15+9/81 4/15+45/81 4/75+9/81 28/15+9/81 4/15+63/81