Matematika

Pertanyaan

1.nilai x yg memenuhi persamaan x-3/4=4-x/-3

2.nilai x yg memenuhi x-3/2=2x-4/3

1 Jawaban

  • jawab

    (1)
    (x-3) / 4 = (4 -x) (-3)
    -3(x - 3) = 4(4 - x)
    -3x + 9 = 16 - 4x
    -3x + 4x = 16 - 9
    x = 7

    (2)

    (x - 3)/2 = (2x - 4)/3
    3(x -3) = 2(2x - 4)
    3x - 9 = 4x - 8
    3x - 4x = 9 - 8
    -x = 1
    x = -1

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