PostsCommentsPayoutswaelmohammed (25)in #iq • 6 years agoRE: IQ test3x=9 x+2y=5 y+2z=15 z+y+z=? x=9/3=3 3+2y=5 \\\2y=2\\\y=1 1+2z=15\\\2z=14\\\z=7 x+y+z=1+3+7=11.