z+y\\\\1)\quad x+y<-z\\-x-y>z\\-x>z+y\quad \boxed{\times}\\\\2)\quad z+x+y<0\\-z-x-y>0\\-x>z+y\quad \boxed{\times}\\\\3)\quad x+z<-y\\-x-z>y\\-x>z+y\quad \boxed{\times}\\\\4)\quad x>-z-y\\-xz+y\\\\1)\quad x+y<-z\\-x-y>z\\-x>z+y\quad \boxed{\times}\\\\2)\quad z+x+y<0\\-z-x-y>0\\-x>z+y\quad \boxed{\times}\\\\3)\quad x+z<-y\\-x-z>y\\-x>z+y\quad \boxed{\times}\\\\4)\quad x>-z-y\\-x