Matematika

Pertanyaan

1) -2x + 8 = 4x - 10
2) 3(x + 1) = 2(x - 3)
3) -2(3x + 2) = 2(2x + 15)
4) 1/2x + 4 = 2/3x + 2
5) 1/2(x + 4) = 2/5(2x - 3)


tolong bantu jawab.........:)

1 Jawaban

  • 1) -2x-4x = -10-8
    -2x = -18
    x = -18/-2
    x = 9

    2) 3x+3 = 2x-6
    3x-2x = -6-3
    x = -9

    3) -6x-4 = 4x + 30
    -6x-4x = 30-4
    -10x = 26
    x = 26/-10
    x = 13/-5

    4) 1/2x-2/3x = -4+2
    3/6x-4/6x = -2
    -1/6x = -2
    x = -12/-1
    x = 12

    5) 1/2x+4/2 = 4/5x-6/5
    1/2x-4/5x = -6/5-4/2
    5/10x-8/10x = -12/10-20/10
    -3/10x = -32/10
    x = 32/3

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