#### Answer

The solution is $x=1$.

#### Work Step by Step

The given equation is
$\Rightarrow 4x=x+3$
Write a system of linear equations using each side of the original equation.
$\Rightarrow y=4x$ ...... (1)
$\Rightarrow y=x+3$ ...... (2)
By using graphing calculator graph the system.
The intersection point is $(1,4)$.
Check:
$\Rightarrow 4x=x+3$
$\Rightarrow 4(1)=1+3$
$\Rightarrow 4=4$
True.
Hence, the solution is $x=1$.