Algebra practice question

Answer: 3

2x + (x + 1) = 10 gives 3x = 9, so x = 3.

Common wrong answers

If you answered 4

4 is y.

If you answered 5

5 halves 10, ignoring y.

If you answered 4.5

4.5 solves 2x + 1 = 10.

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