Solve for x: 3x - 3 = 6x + 18.

Question

Choose the correct answer:
x = -6
x = 2
x = 9
x = -7

Answer 1

To solve for x, we need to isolate x on one side of the equation. Let's do that:

3x - 3 = 6x + 18

First, let's subtract 6x from both sides:

3x - 6x - 3 = 6x - 6x + 18

-3x - 3 = 18

Next, let's add 3 to both sides:

-3x - 3 + 3 = 18 + 3

-3x = 21

Finally, let's divide both sides by -3:

(-3x)/-3 = 21/-3

x = -7

So the correct answer is x = -7.