This is the question i'm stuck on:

a-|a-|a|| Rewrite this expression without absolute value signs, treating various cases separately where necessary.

a-|a-|a||

When a is negative (ie. a=-k);

-k-|-k-k|

-k-|-2k|

-k-2k=-3k=3a

When a is positive (ie.a=k)

k-|k-|k||

k-|k-k|

k-0=k=a

So when a is negative the expression is just 3a.

When a is positive the expression is a.

I just wanted to know if that's correct. The question before it was a lot more complicated, this one seems too easy to be true.....