Explanation
Given the equation
[tex]-3(c+3)=36[/tex]We can find the value of c below
[tex]\begin{gathered} -3c-9=36 \\ add\text{ 9 to both sides} \\ -3c-9+9=36+9 \\ -3c=45 \\ Divide\text{ both side by -3} \\ \frac{-3c}{-3}=\frac{45}{-3} \\ c=-15 \end{gathered}[/tex]Answer: c = -15