Algebra practice question

Answer: 2

Subtracting the equations: 2x = 8, so x = 4. Then 5(4) + 2y = 24 gives 2y = 4, so y = 2.

Common wrong answers

If you answered 4

4 is x; substitute it back to find y = 2.

If you answered 8

8 is 2x after subtracting; continue to x = 4, then y = 2.

If you answered 10

After x = 4, the equation is 20 + 2y = 24, so 2y = 4.

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