3x-2y=8 x=2y-4 solve for x and y

The answer
here is that x = 6 and y = 5.  Here is how you can find this:

The thing to do
here is to take the value that you have been given for x in the second equation and substitute
it into the first equation.  So then you have

3 (2y - 4) - 2y = 8

6y - 12 - 2y = 8

4y = 20

y = 5

Now you take this value of y and substitute it back in to the second equation to find
x.

x = 2 (5) - 4

x = 10 - 4

x =
6