Hi there, I need help with this one

Please provide the solution and explain

(I can only do simple statements myself, so I'm stumped here)

Negate the following statement:

$\displaystyle \forall$x$\displaystyle \in$R $\displaystyle \exists$y$\displaystyle \in$R, x+y=0

(for all real valued x, there's some real valued y, where x+y=0)

Any help is appreciated

Thank you