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confusing equation in mgmat foundations book

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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by Gurpinder » Tue Mar 22, 2011 3:43 pm
hey guys,

i keep on getting an incorrect answer for this equation:

(10(3x+4))/10-5x = 2

I keep on getting [spoiler]-1/2[/spoiler] when the answer in the book is 1. can someone confirm?

pg. 34 Drill Set 2, Drill 4, Question # 8 if you guys have the book
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
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by Tani » Tue Mar 22, 2011 8:24 pm
Are you sure you copied it correctly? Try putting (-1/2) in for x and 2 in for x. Only (-1/2) works.
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by Gurpinder » Tue Mar 22, 2011 8:54 pm
Tani Wolff - Kaplan wrote:Are you sure you copied it correctly? Try putting (-1/2) in for x and 2 in for x. Only (-1/2) works.
Hi Tani,

Yes I did,

I guess the answer is wrong in the book!
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