Help with keyboard problem

I have a mid 2010 Macbook Pro. This mac was given to me by my brother and has survived many horrible climate changes. At this time I know the logic board and battery needs to be replaced but for right now I am trying to milk it until this semester has finished. My problem is whenever I press the right cmd button other buttons are pressed with it (Rcmd = Lcmd+ ] + ` + F11). does anyone know why this is happening?

Thanks