Answer
$$x\approx 2.27$$
Our answer is the same as the answer in the example.
Work Step by Step
To form one equation, we have to move each component of the equation either left-hand side or right-hand side.
$5-3x-8x+20=0$
$25-11x=0$
Now we can graph the equation $25-11x$ and the solution will be the point where the graph intersects $x$-axis; where the solution gets equal to $0$.
As we see from the image above, the point is $\approx2.27$
We obtained the same answer as in the example.