Someone who knows some math please help me!

[Jason1]

First off, lets get one thing straight. Im in a math calss that is way too hard for me. I shouldnt be in it, but I tested into it, so now im stuck in it. They are making us give an oral report of sorts on a math problem.(you would think they would cut us breakes from this ****, considering im in a smarter class, but no, we get to do fun projects like this ****.) So, normaly I would try to do this myself, but see, this is the problem. We sign up for a problem that was on our homework, and then the day we grade that homework assignment, is the day we do our reports. So my teacher wont explain the assignment(and how to do my problem) until the day before Im doing my report. And im going to be busy the night before my report, so wont have time to work on it then. Most people in my class allready know how to do these problems, so they dont have that problem, but im the dumbest one in my class, struggling to maintain a C- Average. So we have to explain the problem on the blackboard. So im going to give the problem I singed up for, and I want someone to plese explain how to get the answer, explaining the steps you took to get there. Im doing my report on Thursday. Here is the problem.

The Directions State:

Solve by either the substitution method or the addition-or-subtraction method.

My problem is:

x-5y=2
2x+y=4

the directions at the begining of the lesson tell you how to do it using the Addition method...this is how it says...

1. Add similar terms of the two equations.
2.Solve the resulting Equation
3. Substitute the number you get for x in either of the origional equations to find y.
4. Check in BOTH equations.

so you should end up with an ordered pair. I appreciate any help, although I probably wont get any. The most crucial thing is getting the correct answer, because if you dont, you get a zero.