This question is about a linear equation.
The given equation is
[tex]-2x-12=9x+18[/tex]First, we need to organize the equation. On the right side terms without variables, on the left side with variables.
[tex]-2x-9x=18+12[/tex]Second, we reduce like terms
[tex]-11x=30[/tex]Third, we divide by -11
[tex]\frac{-11x}{-11}=\frac{30}{-11}\rightarrow x=-\frac{30}{11}[/tex]