Algebra practice question

Answer: 3

5x − 2x − 2 = 7 gives 3x = 9, so x = 3.

Common wrong answers

If you answered 9

9 stops at 3x = 9.

If you answered 1.67

1.67 uses 5x − 2x + 2 = 7, missing the sign on the 2.

If you answered 2.33

2.33 uses 5x − 2x − 1 = 7.

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