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Linear Equations in One Variable

SAT Math· difficulty 2/5

If ∣x−4∣=3|x - 4| = 3, which of the following could be a value of xx?

  • A

    −1-1

  • B

    12

  • C

    −7-7

  • D

    1

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Explanation

x−4=3x - 4 = 3 gives x=7x = 7, or x−4=−3x - 4 = -3 gives x=1x = 1. Among the choices, 1 works.

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