mohon bantuan nya yah tolong jawab no. 7

[tex]8^{ \frac{-2}{3} } = (2^{3})^{ \frac{-2}{3} }= 2^{-2} = \frac{1}{4} \frac{1}{4} + \frac{1}{3} = \frac{4+3}{12} = \frac{7}{12} \frac{1}{4} + \frac{1}{3} = \frac{4+3}{12} = \frac{7}{12}[/tex]