Add 3/5 and 25/81
3/5 + 25/81 is 368/405.
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,
3/5 = 3 × 81/5 × 81 = 243/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
25/81 = 25 × 5/81 × 5 = 125/405 - Add the two like fractions:
243/405 + 125/405 = 243 + 125/405 = 368/405 - So, 3/5 + 25/81 = 368/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/5+25/81 3/5+50/81 3/10+25/81 9/5+25/81 3/5+75/81 3/15+25/81 15/5+25/81 3/25+25/81 21/5+25/81 3/35+25/81