Add 7/81 and 4/9
7/81 + 4/9 is 43/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 9 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
7/81 = 7 × 1/81 × 1 = 7/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
4/9 = 4 × 9/9 × 9 = 36/81 - Add the two like fractions:
7/81 + 36/81 = 7 + 36/81 = 43/81 - So, 7/81 + 4/9 = 43/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/81+4/9 7/81+8/9 7/81+4/18 21/81+4/9 7/81+12/9 7/81+4/27 35/81+4/9 7/81+20/9 7/81+4/45 49/81+4/9 7/81+28/9 7/81+4/63