[tex]( { \frac{1}{9} )}^{x} = 27 \\ \\ tentukan \: nilai \: x \\ \\ pakai \: cara[/tex]

[tex] {( \frac{1}{9} )}^{ x } = 27 \\ {( {3}^{ - 2}) }^{x} = {3}^{3} \\ {3}^{ { - 2x} } = {3}^{ 3} \\ maka \\ - 2x = 3 \\ x = \frac{3}{ - 2} = - 1.5[/tex]