<PRE><B>Question 765399</B>
the guide is incorrect and/or you have a typo in your writings:

|x-5|&lt;2 means


-2 &lt; x-5 &lt; 2 

which leads to

-2+5 &lt; x-5+5 &lt; 2+5

3 &lt; x &lt; 7


:(</PRE>