Read the following SAT test question, then click on a button to select your answer.
If x + 2x is 5 more than y + 2y, then x – y =
- –5
- 5
The statement given in words translates into the equation x + 2x = y + 2y + 5. This simplifies to 3x = 3y + 5. Then 3x – 3y = 5, and so 3(x – y) = 5.
It follows that x – y = .
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