#### Answer

$x=10.5$

#### Work Step by Step

We start with the given equation: $2x-17=4$
First, we add $17$ to both sides of the equation and simplify: $$2x-17+17=4+17$$$$2x=21$$
Next, we divide by $2$ on both sides of the equation: $$\frac{2x}{2}=\frac{21}{2}$$$$x=10.5$$