3 - 4x = 2x - 15

To solve for x, we need to isolate x on one side of the equation.

First, let's combine like terms by moving the 2x to the left side of the equation:

3 - 4x = 2x - 15
3 - 4x - 2x = -15
3 - 6x = -15

Next, let's isolate x by moving the constant term to the other side of the equation:

3 - 6x = -15
3 + 15 = 6x
18 = 6x

Finally, divide by 6 to solve for x:

18/6 = x
3 = x

Therefore, x = 3.

3 - 4x = 2x - 15
3 + 15 = 4x + 2x
18 = 6x
x = 18/6
x = 3