Question

answer of the question​

Answer 1

Solution;

$= > ( \frac{8}{15} ) {}^{3} - ( \frac{1}{ 3} ) {}^{3} - ( \frac{1}{5} ) {}^{3} \\ = > \frac{64}{225} - \frac{1}{9} - \frac{1}{25} \\ = > \frac{64 - 25 - 9}{225} \\ = > \frac{64 - 34}{225} \\ = > \frac{30}{225 } \\ = > \frac{10}{75}$