2. 外语
  3. If x=6y, then which of the following expressions is a multiple of x? Select all such expressions.

If x=6y, then which of the following expressions is a multiple of x? Select all such expressions.

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问题 If x=6y, then which of the following expressions is a multiple of x? Select all such expressions.
选项 A、3y
B、2y
C、30y
答案B, C
解析 The correct answer is B and C. In this case, a multiple of x has to also be a multiple of 6. Therefore, both 12y and 30y are correct.
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