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15 December, 03:13

7x + 5 = 3x - 15

solve for x

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Answers (2)
  1. 15 December, 03:44
    0
    7x + 5 = 3x - 15

    4x = - 20

    x = - 5
  2. 15 December, 04:34
    0
    7x+5=3x-15 x=-5

    Step-by-step explanation:

    Subtract from both sides

    7x+5-5=3x-15-5

    {Simplify}

    7x=3x-20

    {Subtract}{3x from both sides}

    7x-3x=3x-20-3x

    {Simplify}

    4x=-20

    Divide both sides by 4

    4x over 4 = - 20 over 4

    {Simplify}

    x=-5
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