Final answer:
To solve the equation 12 = 2x - 4 for x, add 4 to both sides to get 16 = 2x, and then divide both sides by 2 to find that x equals 8.
Step-by-step explanation:
To solve for x in the equation 12 = 2x - 4, we start by adding 4 to both sides to isolate the term with the variable on one side of the equation. This gives us:
12 + 4 = 2x - 4 + 4
16 = 2x
Next, we divide both sides of the equation by 2 to solve for x:
16 / 2 = 2x / 2
8 = x
Therefore, the value of x is 8.