If 3x = 12, what is the value of x?

To find the value of x in the equation (3x = 12), you need to isolate x by dividing both sides of the equation by 3.

So, you start with the equation:

[ 3x = 12 ]

Now, divide both sides by 3:

[ x = \frac{12}{3} ]

Calculating that gives:

[ x = 4 ]

Thus, when the equation is simplified appropriately, x equals 4. This is the correct answer because it fulfills the original equation when substituted back; multiplying 4 by 3 results in 12. This confirms that the calculated value of x is accurate and verifies the solution to the equation.