How many solutions does the equation 4x – 12 = 0 have?

To solve the equation 4x – 12 = 0, we need to isolate the variable x. Here are the steps:

1. Add 12 to both sides:

This gives us:

    4x = 12
    

2. Divide both sides by 4:

This simplifies to:

    x = 3
    

Since we find a single value of x (which is 3) that satisfies the equation, we can conclude that:

The equation has one unique solution.

In summary, the equation 4x – 12 = 0 has exactly one solution, which is x = 3.