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Re: Inequality cross multi question [#permalink]
22 Jun 2008, 23:32
So if the denominator is a variable, then, better not to cross multiply? Here's a DS example from OG C Question is: If x is not equal to -y, is (x-y)/(x+y) >1? In this equation, I cannot simplify it to (x-y)>(x+y) right?because denominator (x+y) is unknown?