Matematika

Pertanyaan

Tentukan eliminasi dari:
@ -8x+4y-3z=-2
@ 2x-3y+2z=-10
@ 5x-y=11

1 Jawaban

  • -8x+4y-3z=-2 x 2
    2x-3y+2z=-10 x3

    = -16x+8y-6z=-4
    6x-9y+6z=-30
    ............................+
    -10x-y = -34
    5x-y = 11
    ..............................-
    -15x = -45
    x = 3
    -10x-y = -34
    -10.3-y = -34
    -30-y = -34
    -y = -34+30
    -y = -4
    y = 4
    -8x+4y-3z=-2
    -8x3 + 4x4 -3z = -2
    -24 + 16 - 3z = -2
    -8 -3z =-2
    -3z = 6
    z = -2

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