Matematika

Pertanyaan

1.)5x+13=-12 2.)7x-8=-20 3.)2x+7=14-3x 4.)6-x=5x+30 tolong dijawab ya:)

2 Jawaban

  • Jawab =
    1) 5x+13=-12
    5x=-12-13
    5x=-25
    x = -25/5
    x = -5
    2) 7x-8 = -20
    7x = -20+8
    7x = -12
    x = -12/7 (yang ini gak salah soal kan?)
    3) 2x+7 = 14-3x
    2x+3x = 14-7
    5x = 7
    × = 7/5
    4) 6-x = 5x+30
    -x-5x = 30-6
    -6x = 24
    x = 24/-6
    x = -4

  • 1)

    5x+13 = - 12
    5x = - 12-13
    5x = -25
    x = - 5


    2)

    7x-8 = - 20
    7x = -20+8
    7x = - 12
    x = - 12/7


    3)

    2x+7=14-3x
    2x+3x = 14-7
    5x = 7
    x = 7/5

    4)

    6-x=5x+30
    -x-5x = 30-6
    -6x = 24
    x = -4

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