Add 5/81 and 16/18
5/81 + 16/18 is 77/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 18 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
5/81 = 5 × 2/81 × 2 = 10/162 - Likewise, for the 2nd fraction, since 18 × 9 = 162,
16/18 = 16 × 9/18 × 9 = 144/162 - Add the two like fractions:
10/162 + 144/162 = 10 + 144/162 = 154/162 - 154/162 simplified gives 77/81
- So, 5/81 + 16/18 = 77/81
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/81+16/18 5/81+32/18 5/81+16/36 15/81+16/18 5/81+48/18 5/81+16/54 25/81+16/18 5/81+80/18 5/81+16/90 35/81+16/18