Algebra practice question

Answer: 5

Substitute x = 3: 4(3 + c) = 32, so 3 + c = 8 and c = 5.

Common wrong answers

If you answered 2

2 comes from 4c = 8 (forgetting to distribute the 4 to the 3).

If you answered 8

8 is 3 + c, not c.

If you answered -5

−5 has the wrong sign.

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