Answer
The solution is $x=-3$.
Work Step by Step
The given equation is
$\Rightarrow x+5=-2x-4$
Write a system of linear equations using each side of the original equation.
$\Rightarrow y=x+5$ ...... (1)
$\Rightarrow y=-2x-4$ ...... (2)
By using graphing calculator graph the system.
The intersection point is $(-3,2)$.
Check:
$\Rightarrow x+5=-2x-4$
$\Rightarrow -3+5=-2(-3)-4$
$\Rightarrow -3+5=6-4$
$\Rightarrow 2=2$
True.
Hence, the solution is $x=-3$.
