Question

${3} { }^{ - 3} + 2 {}^{ - 3}$

Answer 1

${3}^{ - 3} + {2}^{ - 3} = \\ \\ {( \frac{1}{3} )}^{3} + {( \frac{1}{2} )}^{3} = \\ \\ \frac{1}{27} + \frac{1}{8} = \\ \\ \frac{8 + 27}{216} = \\ \\ \frac{35}{216}$