teagan4christ teagan4christ 13-02-2017 Mathematics contestada Add And Simplify. (2x-y-2z-6) + (-6x+4y+3z+8) A. -4x+3y+z+2 B. 4x-3y-z+2 C. -4x+3y-z-2 D. 4x-3y+z+2