Answer:
[tex]\large \boxed{\text{B. x = 8}}[/tex]
Step-by-step explanation:
[tex]\begin{array}{rcll}x - 12 & = & -4 & \\x - 12 + 12 &= & -4 + 12 & \text{Added 12 to each side}\\x & = & \mathbf{8} & \text{Simplified}\\\end{array}\\\large \boxed{\mathbf{x = 8}}[/tex]
Check:
[tex]\begin{array}{rcl}8 - 12 & = & -4\\-4 & = &-4\\\end{array}[/tex]
OK.
