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Linear Equations in One Variable

SAT Math· difficulty 2/5

What are the solutions to ∣x−4∣=7|x - 4| = 7?

  • A

    x=11x = 11 only

  • B

    x=−3x = -3 or x=11x = 11

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  • C

    x=3x = 3 or x=−11x = -11

  • D

    x=−3x = -3 only

Explanation

x−4=7x - 4 = 7 gives x=11x = 11; x−4=−7x - 4 = -7 gives x=−3x = -3.

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