Matematika

Pertanyaan

Tolong dong pliss:( pers 1=x+3y+2=0 pers 2=x-3y=16. menggunakan metode substitusi.

1 Jawaban

  • x + 3y + 2 = 0
    x - 3y = 16

    x + 3y + 2 = 0
    x + 3y = - 2

    x + 3y = - 2
    x - 3y = 16
    ________+
    2x = 14
    x = 14/2
    x = 7

    x + 3y = - 2
    7 + 3y = - 2
    3y = - 2 - 7
    3y = - 9
    y = - 9/3
    y = - 3

    Maaf Kalau Salah

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