Matematika

Pertanyaan

Tentukan nilai x !
Pakai rumus Ini yaa (ax+b-b=c-b)

1.)5x-4=3x-5
2.)x-5=5x+11
3.)9x-1=3x-10

1 Jawaban

  • 1. 5x - 4 + 4 = 3x - 5 + 4
    5x = 3x -1
    5x - 3x = -1
    2x = -1
    x = -1/2

    2. x-5+5 = 5x+11+5
    x = 5x + 16
    x-5x = 16
    -4x = 16
    x = -16/4 = -4

    3. 9x-1+1 = 3x-10+1
    9x = 3x -9
    9x-3x = -9
    6x = -9
    x = -9/6 = - 3/2

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