Advanced Math practice question

Answer: 2

x + 1 = 3(x − 1) → x + 1 = 3x − 3 → 4 = 2x → x = 2.

Common wrong answers

If you answered 1

1 makes the denominator zero and is not allowed.

If you answered 4

4 is 2x, before dividing by 2.

If you answered -2

−2 comes from x + 1 = 3x + 3, distributing the 3 wrongly.

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