If x = y, what is 2x when compared with 2y?

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Multiple Choice

If x = y, what is 2x when compared with 2y?

Explanation:
When two quantities are equal, multiplying both sides by the same number keeps them equal. Since x = y, doubling both sides gives 2x = 2y. So 2x and 2y are the same value. (Note that discussing x/y would require y ≠ 0, in which case x/y would be 1 when x = y.)

When two quantities are equal, multiplying both sides by the same number keeps them equal. Since x = y, doubling both sides gives 2x = 2y. So 2x and 2y are the same value. (Note that discussing x/y would require y ≠ 0, in which case x/y would be 1 when x = y.)

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