Matematika

Pertanyaan

jika m dan n memenuhi sistem persamaan 5m-n= 26 dan m+ n = 10 maka 2m+ n adalah

2 Jawaban

  • Eliminasi n :
    5m - n = 26
    m + n = 10
    __________+
    6m = 36
    m = 36/6
    m = 6

    m = 6 substitusi ke persamaan m + n = 10

    m + n = 10
    6 + n = 10
    n = 10 - 6
    n = 4

    HP = {6, 4}

    Nilai 2m + n
    = 2(6) + 4
    = 12 + 4
    = 16
  • (5m - n = 26) + (m + n = 10)
    6m = 36
    M = 36 : 6
    M = 6

    M + n = 10
    6 + n = 10
    N = 10 - 6
    N = 4

    2m + n = 2 (6) + 4
    2m + n = 12 + 4
    2m + n = 16
    Gambar lampiran jawaban putriwahidatul

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