Algebra practice question

Answer: 3

x + 5 = 3x − 1 gives 6 = 2x, so x = 3.

Common wrong answers

If you answered 2

2 comes from 4 = 2x, a slip with the constants.

If you answered 8

8 is the common value of the expressions, not x.

If you answered -3

−3 has the sign wrong.

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