Algebra practice question

Answer: 12

3s + 12 = 2(s + 12) gives 3s + 12 = 2s + 24, so s = 12.

Common wrong answers

If you answered 6

6 comes from 3s + 12 = 2s + 12 + 6, halving the 12 on one side.

If you answered 24

24 is the son's age in 12 years.

If you answered 36

36 is Mira's age now.

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