Algebra practice question

Answer: 11

Cross-multiply: 6(x − 3) = 4(x + 1) → 6x − 18 = 4x + 4 → 2x = 22 → x = 11. Check: 8/4 = 2 and 12/6 = 2.

Common wrong answers

If you answered 2

2 is the common value of both sides, not x.

If you answered 7

7 comes from 6x − 18 = 4x + 4 solved as 2x = 14, dropping the sign of −18.

If you answered -7

−7 comes from 2x = −14, mishandling the constants.

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