Matematika

Pertanyaan

15x-5y=30 dg 3x+y+6=0

1 Jawaban

  • 15x - 5y = 30
    3x + y = -6
    maka
    15x - 5y = 30
    15x + 5y = -30

    (mencari y)
    -10y = 60
    -y = 6
    y = -6

    (mencari x)
    15x = 0
    x = 0

    bukti
    15x - 5y = 30
    15.0 - 5.(-6) = 30
    0 - (-30) = 30
    30 = 30

    3x + y + 6 = 0
    3.0 + (-6) + 6 = 0
    0 - 6 + 6 = 0
    0 = 0

    terbukti!

Pertanyaan Lainnya