Matematika

Pertanyaan

tolong ya no. 19 dan 20.!!
tolong ya no. 19 dan 20.!!

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1 Jawaban

  • 20.

    180 = x+2y + 100

    80 = x+2y

    5x = 100

    x = 20

    80 = 20 + 2y

    80-20 = 2y

    60 : 2 = y = 30

    x = 20
    y = 30 (a)

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