Matematika

Pertanyaan

berapa hasil eliminasi x-2y=8 5x+3y=1?

1 Jawaban

  • x-2y=8 | ×5
    5x+3y=1 | ×1
    _____________
    5x-10y=40
    5x+3y=1
    ___________ _
    -13y=39
    y=39/(-13)
    y=-2

    subtitusi nilai y=-2 ke...(1)
    x-2y=8
    x-2(-2)=8
    x+4=8
    x=8-4
    x=4

    jdi, nilai x=4 & y=-2

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