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7 December, 17:57

What value of x makes the equation true?

-1=1 - 4 (-5+4x) - 4x

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Answers (1)
  1. 7 December, 18:54
    0
    x = 11/10

    Step-by-step explanation:

    we have from statement:

    -1=1 - 4 (-5+4x) - 4x

    we apply distributive property:

    -1 = 1 - 4 * (-5) - 4 * (4x) - 4x

    so we have:

    -1 = 1+20 - 16x - 4x

    -1 = 21 - 20x

    -22=-20x

    so we have:

    x=22/20

    x=11/10

    we can substitute the x value found:

    -1 = 1 - 4 (-5+4 * (11/10)) - 4 * (11/10)

    -1 = 1+20 - 17.6 - 4.4

    -1 = 21 - 22

    so we have:

    -1 = - 1
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