The initial expression is:
-5(6-5x) - x = 18
Applying distributive property:
-5(6) + (-5)(-5x) - x = 18
-30 + 25x - x = 18
-30 + 24x = 18
Adding 30 on both sides of the equation:
-30 + 24x + 30 = 18 + 30
24x = 48
Dividing by 24, we get:
[tex]\begin{gathered} \frac{24x}{24}=\frac{48}{24} \\ x=2 \end{gathered}[/tex]Answer: x=2