Add 2/5 and 6/81
2/5 + 6/81 is 64/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 5 × 81 = 405,
2/5 = 2 × 81/5 × 81 = 162/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
6/81 = 6 × 5/81 × 5 = 30/405 - Add the two like fractions:
162/405 + 30/405 = 162 + 30/405 = 192/405 - 192/405 simplified gives 64/135
- So, 2/5 + 6/81 = 64/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/5+6/81 2/5+12/81 2/10+6/81 6/5+6/81 2/5+18/81 2/15+6/81 10/5+6/81 2/5+30/81 2/25+6/81 14/5+6/81 2/5+42/81 2/35+6/81