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A text book that I'm reading has $k < -5$ as the solution for $k+5 > 0$. What I want to know is how this can be - why is it not $k > -5$?

Edit: looks like the text book's made a mistake.

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    Because they made a mistake?2011-12-20
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    Yeah, that's what I'm thinking as well. But I just need to make sure because it doesn't make logical sense. The book is http://www.amazon.co.uk/Mathematics-Higher-Level-Fabio-Cirrito/dp/1876659114/ref=pd_cp_b_02011-12-20

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