Answer:
[tex]\frac{8\cdot x}{81 - 324\cdot x}[/tex]
Step-by-step explanation:
The expression is:
[tex]\frac{2}{9\cdot (\frac{9}{4\cdot x}-9)}[/tex]
[tex]\frac{2}{9\cdot (\frac{9-36\cdot x}{4\cdot x} )}[/tex]
[tex]\frac{2}{9}\cdot \frac{4\cdot x}{9-36\cdot x}[/tex]
[tex]\frac{8\cdot x}{81 - 324\cdot x}[/tex]
