Advanced Math practice question

Answer: 3

2x − 1 = 5 gives x = 3; the other root, 2x − 1 = −5, gives x = −2.

Common wrong answers

If you answered 12

12 solves 2x = 25 − 1.

If you answered 13

13 solves 2x − 1 = 25.

If you answered -2

−2 is the negative solution.

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