Respuesta :

To solve this problem, we are going to use the process called linear combination.  This means we are going to add the equations together.  First, we must negate one equation (make it negative) so that the y values cancel out when we add them.

3x + 2y = 18

-2x -2y = -14

Now, we are going to "add" these two equations together.  Because the coefficient of one y value is 2 and the coefficient of the other is -2, these are going to cancel out.  The following is our remaining equation:

3x - 2x = 18 - 14

We can perform the subtraction on both sides of the equation to get:

x = 4

Therefore, your answer is x = 4.

Hope this helps!