Matematika

Pertanyaan

Selesaikan dengan metode subtitusi
1. 4x - 2y = 16
2x - 3y = 12

2 Jawaban

  • 4x-2y = 16 | x1
    2x-3y= 12 | x2
    _____________
    4x-2y=16
    4x-6y=24
    _____________ _
    4y = -8
    y = -2

  • 4x - 2y = 16 || X 1
    2x - 3y = 12 || X 2
    ------------------
    4x - 2y = 16
    4x - 6y = 24
    ----------------- -
    4y = - 8
    y = -8/4
    y = -2

    lalu masukkan ke salah satu 4x - 2y = 16
    4x - 2(-2) = 16
    4x + 4 = 16
    4x = 16 - 4
    4x = 12
    x = 3
    jadi X,Y = ( 3, -2 )

Pertanyaan Lainnya