Matematika

Pertanyaan

X + y +z =48.....
X - y + z=20.....
X + y - z =4....

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  • Materi SpLTV

    x + y + z = 48
    x - y + z = 20
    ------------------ -
    2y = 28
    y = 14.

    x - y + z = 20
    x + y - z = 4
    ------------------- +
    2x = 24
    x = 12
    Sehingga
    x + y + z = 48 => 12 + 14 + z = 48 => z = 22

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