Matematika

Pertanyaan

2x+y+z=-9
3y-2z=-4
8z=-8

1 Jawaban

  • 8z=-8
     z = -8/8
      z = -1

    3y-2z = -4
    3y-2(-1)=-4
    3y-(-2)=-4
    3y+2=-4
    3y=-4-2
    3y=-6
    y=-6/3
    y= -2

    2x+y+z=-9
    2x+(-2)+(-1)=-9
    2x-2-1=-9
    2x-3=-9
    2x=-9+3=-6
    x=-6/2=-3

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