EIV Guide - absolute values and ineqaulities

[Guest]

On pg 81 in the EIV guide, it says "When you drop the absolute value signs, you either leave the expression alone OR enclose the entire expression in parentheses and put a negative sign in front." How do you know which to do? I suppose you are supposed to consider both senarios, but I'm having a difficult time understanding how the making the expression negative is the absolute value.

[rfernandez]

Yes, you should consider both scenarios when solving an absolute inequality (or an equation). Please post a specific problem so your question can have some more focus and context. Thanks.