Matematika

Pertanyaan

Metode eliminasi dari 3x+5y=11 dan2x+y=-2

2 Jawaban

  • 3x + 5y = 11 =| 2 | = 6x + 10y = 22
    2x + y = -2 = | 3 | = 6x + 3y = - 6 -
    7y = 28
    y = 28/7 y = 4




    3x + 5y = 11 | 1 | = 3x + 5y = 11
    2x + y = -2 | 5 | = 10x + 5y = - 10 -
    -7x = 21
    x = 21/-7 x = - 3

    Jadi HP = {(-3,4)}
  • 3x+5y= 11
    2x+ y =-2

    22+6=38
    10 -3

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