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Math Problem

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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Source: — Quantitative Reasoning |
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Junior | Next Rank: 30 Posts
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by Tomn » Mon Jan 05, 2009 11:10 am
4x+y=x-y

Subtract x from each side

3x+y=-y

Subtract y from each side

3x=-2y

Divide by -2

y=(-3/2)x

substitute (-3/2)x for every instance of y in the initial problem and solve through...
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Newbie | Next Rank: 10 Posts
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by reneerenee » Wed Jan 07, 2009 12:05 pm
what book is that from?
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