Answer:
x = 6
Step-by-step explanation:
[tex]-84=-5(2x+4)-4\qquad\text{add 4 to both sides}\\\\-84+4=-5(2x+4)-4+4\\\\-80=-5(2x+4)\qquad\text{divide both sides by (-5)}\\\\\dfrac{-80}{-5}=\dfrac{-5(2x+4)}{-5}\\\\16=2x+4\qquad\text{subtract 4 from both sides}\\\\16-4=2x+4-4\\\\12=2x\qquad\text{divide both sides by 2}\\\\\dfrac{12}{2}=\dfrac{2x}{2}\\\\6=x\to x=6[/tex]
