## Algebra 1: Common Core (15th Edition)

$x=6$
The original equation is $2x-4=8$. We need to begin by isolating the variable. We can do so by first adding $4$ to each side. $2x-4+4=8+4$ Now, the equation should look like this: $2x=12$. To solve for $x$, divide each side of the equation by $2$ to isolate the variable. $\frac{2x}{2}=\frac{12}{2}$ $2x\div2$ cancels out the $2$, leaving just $x$. $12\div2=6$. Now, you have successfully solved for $x$, where $x=6$. To check your answer, plug $6$ into the original equation. $2(6)-4=8$ $12-4=8$ Therefore $x=6$ is correct.