Add 1/81 and 1/15
1/81 + 1/15 is 32/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 15 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
1/81 = 1 × 5/81 × 5 = 5/405 - Likewise, for the 2nd fraction, since 15 × 27 = 405,
1/15 = 1 × 27/15 × 27 = 27/405 - Add the two like fractions:
5/405 + 27/405 = 5 + 27/405 = 32/405 - So, 1/81 + 1/15 = 32/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/81+1/15 1/81+2/15 1/81+1/30 3/81+1/15 1/81+3/15 1/81+1/45 5/81+1/15 1/81+5/15 1/81+1/75 7/81+1/15 1/81+7/15