Selesaikan sistem persamaan {X+y+z=12,2x-y+2y=12,2x+2y-z=18 By Admin ReiPosted on December 9, 2022 Selesaikan sistem persamaan {X+y+z=12,2x-y+2y=12,2x+2y-z=18 X=2 y=8z=2 itulah nilai x,y,z