Add 16/3 and 21/81
1st number: 5 1/3, 2nd number: 21/81
16/3 + 21/81 is 151/27.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
16/3 = 16 × 27/3 × 27 = 432/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
21/81 = 21 × 1/81 × 1 = 21/81 - Add the two like fractions:
432/81 + 21/81 = 432 + 21/81 = 453/81 - 453/81 simplified gives 151/27
- So, 16/3 + 21/81 = 151/27
In mixed form: 516/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/3+21/81 16/3+42/81 16/6+21/81 48/3+21/81 16/3+63/81 16/9+21/81 80/3+21/81 16/15+21/81 16/21+21/81