Respuesta :
Divide by 4 to get [tex]2x+12=0[/tex]. Subtracting 12, we see that [tex]2x=-12[/tex]. Divide by 2 to find that [tex]x=-6[/tex].
[tex]4(2x+12)=0 \ \ \ \ \ \ \ \ \ \ \ \ |\div 4 \\
2x+12=0 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |-12 \\
2x=-12 \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\div 2 \\
x=-6[/tex]