Add 4/81 and 4/45
4/81 + 4/45 is 56/405.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 45 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
4/81 = 4 × 5/81 × 5 = 20/405 - Likewise, for the 2nd fraction, since 45 × 9 = 405,
4/45 = 4 × 9/45 × 9 = 36/405 - Add the two like fractions:
20/405 + 36/405 = 20 + 36/405 = 56/405 - So, 4/81 + 4/45 = 56/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/81+4/45 4/81+8/45 4/81+4/90 12/81+4/45 4/81+12/45 20/81+4/45 4/81+20/45 28/81+4/45 4/81+28/45