Algebra practice question

Answer: 1

From the second, y = 7 − x. Substitute: 3x − 14 + 2x = 6, so 5x = 20, x = 4, y = 3. x − y = 1.

Common wrong answers

If you answered 3

3 is y alone.

If you answered 4

4 is x alone.

If you answered 7

7 is x + y, the given sum.

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