Algebra practice question

Answer: 8

2n − 5 = n/2 + 7 → (3/2)n = 12 → n = 8. Check: 16 − 5 = 11 and 4 + 7 = 11.

Common wrong answers

If you answered 12

12 is (3/2)n, before dividing by 3/2.

If you answered 4.8

4.8 comes from (5/2)n = 12, adding n/2 instead of subtracting it.

If you answered -8

−8 has the wrong sign.

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