Matematika

Pertanyaan



Tentukan nilai x,y,dan z
X = 2y + 1
X + 2z = 7
Z - 3y = -1

1 Jawaban

  • X = 2y + 1
    X + 2z = 7
    Z - 3y = -1 +> z = 3y - 1

    x + 2z = 7
    2y +1 + 2(3y - 1) = 7
    2y +6y = 7 -1 +2
    8y = 8
    y = 1

    x = 2y + 1
    x = 2(1) +1
    x = 3

    z = 3y - 1
    z = 3(1) - 1
    z = 2

    jadi nilai x=3 y=1 dan z=2

Pertanyaan Lainnya