Solve for x 3x-9=(-18)

$3 x - 9 = (- 18)$

Step 1

Move all terms not containing $x$ to the right side of the equation.

Add $9$ to both sides of the equation.

$3 x = - 18 + 9$

Add $- 18$ and $9$ .

$3 x = - 9$

Step 2

Divide each term in $3 x = - 9$ by $3$ and simplify.

Divide each term in $3 x = - 9$ by $3$ .

$\frac{3 x}{3} = \frac{- 9}{3}$

Simplify the left side.

Cancel the common factor of $3$ .

Cancel the common factor.

$\frac{3 x}{3} = \frac{- 9}{3}$

Divide $x$ by $1$ .

$x = \frac{- 9}{3}$

Simplify the right side.

Divide $- 9$ by $3$ .

$x = - 3$