# Math Help - prove that

1. ## prove that

|x+2| less than or = 1......is |x|= or less than 3

2. Originally Posted by lebanon
|x+2| less than or = 1......is |x|= or less than 3

It's not clear what you meant, but $|x+2|\leq 1\Longleftrightarrow -1\leq x+2\leq 1\Longleftrightarrow -3\leq x\leq -1$ ...

Tonio