First, write both equations:
(1)

(2)

Notice that equation (2) only has one variable (x) in it. Let's identify what x is equal to by simplifying this equation.
Start by subtracting 18 from both sides:

Next, divide both sides by 6:

Now that we have a value for x, we can plug it into equation (1) to find a value for the variable (y).
Plug
into equation (1):

Multiply -8 and (-13/6). Note that a negative number multiplied by another negative number equals a positive:

Combine terms on the right of the equation:


Finally, divide both sides of the equation by 2 to find a value for y:

Simplify:

Therefore, the answer to the system of equations is:

