Algebra practice question

Answer: 5

The sum is 6x + 6, and (6x + 6)/3 = 12 gives 6x + 6 = 36, so x = 5.

Common wrong answers

If you answered 2

2 solves 3x + 6 = 12.

If you answered 6

6 solves 6x = 36 without the +6.

If you answered 30

30 forgets to divide the sum by 3.

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