2x+3y-z=19 3x+2y+z=21 x+y+z=9 x,y,z nya apa? By Admin ReiPosted on October 29, 2022 2x+3y-z=19 3x+2y+z=21 x+y+z=9 x,y,z nya apa? Jawaban: 4,6,5 karena2x+3y-4=19