Question

3x - 4 = -31

Explanation:

Step1: Isolate the term with $x$

Add 4 to both sides.
$3x - 4 + 4 = -31 + 4$
$3x = -27$

Step2: Solve for $x$

Divide both sides by 3.
$\frac{3x}{3} = \frac{-27}{3}$
$x = -9$

Answer:

$x = -9$