If x, y, and w are nonzero numbers and x-y=w, which of the following is equal to 1?

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问题 If x, y, and w are nonzero numbers and x-y=w, which of the following is equal to 1?

选项 A、
B、
C、
D、
E、

答案A

解析 Add y to and subtract w from both sides of the equation x-y=w and you get x-w=y, so

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GMAT QUANTITATIVE

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