Matematika

Pertanyaan

A.2 + 3(1 - 2x)= 5 - 2(2x + 3)
B.3(x + 4) =6(x - 2)

2 Jawaban

  • 2 + 3(1 - 2x) = 5 - 2(2x + 3)
    2 + 3 - 6x = 5 - 4x - 6
    5 - 6x = -4x - 1
    -6x + 4x = -1 - 5
    -2x = -6
    x = 3 

    -------------------------------

    3(x + 4) = 6(x - 2)
    3x + 12 = 6x - 12
    3x - 6x = -12 - 12
    -3x = -24
    x = 8 

    Semoga membantu ^_^
  • a. 2 + 3(1-2x)= 5 -2 (2x +3)
    2 + 3 -6x = 5 - 4x -6
    5 -6x = -1 -4x
    5+1 = -4x+6x
    6 = 2x
    x = 6÷2 =3

    b. 3(x+4) = 6(x-2)
    3x+12 = 6x-12
    3x - 12x = -12 - 12
    -3x. = -24
    x = -24 ÷ -3
    x = 8

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