SOLUTION: Can I also have help with this one... solve for x and y for x-y=4 and x+y=4 I am having such a hard time solving the problem... please help

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Can I also have help with this one... solve for x and y for x-y=4 and x+y=4 I am having such a hard time solving the problem... please help      Log On


   

Question 64927: Can I also have help with this one...
solve for x and y for x-y=4 and x+y=4
I am having such a hard time solving the problem... please help
Answer by navytutor(7) About Me  (Show Source):
You can put this solution on YOUR website!
First solve for any of the variables in any of the equations and then plug it in back in the other equation. x=4+y, then (4+y)+y=4 ---> 4+2y=4 2y=0 y=0, then x=4!!!