Question

What is the solution to the system of equations?

x + y = 2
x - y = 4

Answer 1

This one is easy because you can simply solve this vertically. y and -y cancel each other out, so you're left with 2x = 6. Divide each side by 2 and you're left with 3. x = 3 Now plug in x into one of the original equations.
x + y = 2
3 + y = 2
-3 -3
y = -1
So x = 3 and y = -1
You can plug both in to check your answer.
x + y = 2
3 + (-1) = 2
2 = 2 Yes.
x - y = 4
3 - (-1) = 4
3 + 1 = 4
4=4 Yes

Answer 2

Did that help? (:

Answer 3

Yes, That helped! Thanks :)

Answer 4

You're welcome.