Algebra practice question

Answer: 11

Multiply by 6: 2(2x + 5) − 3(x − 1) = 24, so 4x + 10 − 3x + 3 = 24 and x = 11.

Common wrong answers

If you answered 5

5 forgets to multiply the right side by 6.

If you answered 7

7 drops the sign change on −3(x − 1).

If you answered 17

17 uses 4x + 10 − 3x − 3 = 24 with the sign of the 3 wrong.

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