Question

-8= -2(z+7) How do you sovle this equation

Answer 1

-8=-2z-14
+2z-8=-14
2z=-14+8
2z=-6
2z\2z=-6/2z
z=3

Answer 2

$-8= -2(z+7)$                  $Equation$

$\dfrac{-8}{-2} =z+7$      $Divide \ both \ sides \ by \ -2$
 
$\dfrac{8}{2} =z+7$  

$4=z+7$ 

$4-7=z$            $Subtract \ 7 \ from \ both \ sides$

$z=-3$              $Solution$