Answer
$x=-13$
Work Step by Step
We need to get the x alone. Thus, we cancel out the subtraction by adding 4 on both sides. This leaves us with the equation $ -x=13$. In order to cancel out multiplication, we use division, so we divide both sides by -1 to get that $x=-13$. We plug -13 in for x and confirm that our answer is, indeed, correct.
