Can you help break this down. I do not understand at all

Given:
There is an expression given in the question as,
[tex]4x-2(3x-9)[/tex]Required:
We need to find the equal equation in the given option.
Explanation:
First we simplify the given equation
[tex]\begin{gathered} 4x-2(3x-9) \\ =4x-6x+18 \\ =-2x+18 \\ =18-2x \end{gathered}[/tex]Final answer:
[tex]18-2x[/tex]