Question

can somebody give me the answer to:
Solve x + 3y = 9
3x - 3y = -13
Please?

Answer 1

Add the two equations eliminating Y, and get x.. Then substitute in any of them for the value of x and get the value of y!

Answer 2

I get to:
x = 11/2

But that can't be the right answer :/ I don't know what I'm doing wrong.

Answer 3

x + 3y = 9
3x - 3y = -13
------------------
4x = -4
x = -1

Answer 4

Do yo see when we add the two equations, the y's cancel.
This leaves you with 4x = -4
Divide both sides by 4 to get x = -1

Answer 5

Now substitute -1 for x in either original equation and solve for y.