Matematika

Pertanyaan

nilai X dari persamaan X/3 + 5 = 2X/2 - 1

2 Jawaban

  • x/3 + 5 = 2x/2 -1
    x/3 + 5 = x - 1
    x/3 + 15/3 = x-1
    x+15 = 3(x-1)
    x+15 = 3x-3
    15+3 = 3x-3
    18 = 2x
    9 = x
  • x/3 + 5 = 2x/2 -1
    x/3 -2x/2 = -1 -5
    2x-6x/6 = -6
    -4x = -36
    x= 9

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