Matematika

Pertanyaan

19x - y - 24 = 0 9x + 4y + 11 =

1 Jawaban

  • Persamaan :

    •19x - y = 24 --> y = 19x - 24
    •9x + 4y = -11

    Cara substitusi :
    9x + 4(19x - 24) = -11
    9x + 76x - 96 = -11
    85x = 85
    x = 1

    y = 19 (1) - 24
    Y = -5

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