tolong pakai caranya

[tex]( \frac{2}{3} ) ^{ - 3} \\ = \frac{1}{ (\frac{2}{3})^{3} } \\ = \frac{1}{ \frac{8}{27} } \\ = 1 \times \frac{27}{8} \\ = \frac{27}{8} [/tex]