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27 September, 21:52

Assume n is an integer and solve for n.

|2n - 3| = 5

a. {-4, - 1}

b. {1, 1}

c. {-1, 4}

d. {4, 4}

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Answers (1)
  1. 27 September, 22:14
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    |2n - 3| = 5 ⇔ 2n - 3 = - 5 or 2n - 3 = 5 |add 3 to both sides

    2n = - 2 or 2n = 8 |divide both sides by 2

    n = - 1 or n = 4

    Answer: c. {-1; 4}
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