2. 外语
  3. Each of Questions 1 to 7 presents two quantities, Quantity A and Quantity B. Compare the two quantities. You may use additional

Each of Questions 1 to 7 presents two quantities, Quantity A and Quantity B. Compare the two quantities. You may use additional

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问题 Each of Questions 1 to 7 presents two quantities, Quantity A and Quantity B. Compare the two quantities. You may use additional information centered above the quantities if such information is given. Choose one of the following answer choices:
A if Quantity A is greater;
B if Quantity B is greater;
C if the two quantities are equal;
D if you cannot determine the relationship based on the given information.

选项 A、 
B、 
C、 
D、 
答案C
解析 The correct answer is C. To solve this problem, multiply both sides of the given equation by 3 to get 9w+6v-3z=9w. Next, subtract 9w from both sides to get 6v-3z=0. Now you can solve for z in terms of v, as follows:
6v=3z
2v=z
Both quantities are equal.
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