Matematika

Pertanyaan

x+y=7
7x+3y=37
nilai 5xy ?

1 Jawaban

  • x + y = 7 (x3)
    7x + 3y = 37 (x1)

    3x + 3y = 21
    7x + 3y = 37 (dikurangkan)

    -4x = -16
    x = -16/-4
    x = 4

    x + y = 7
    4 + y = 7
    y = 7 - 4
    y = 3

    5xy
    = 5.4.3
    = 60
    Jadi 5xy hasilnya 60
    Semoga membantu

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