Hey there.

Can someone please help me out here...how to solve..?

|x-1| = |x-1|

I know the next step is so get rid of the absolute values so

x-1 = x-1
but then the answer will be 0??? is it correct or..??




another question:
Let A={1,3,5,7,9} and B={2,4,6,8}, C={1,2,3,4,5}

whats the answer to..

A u B n C

p.s. u: union, n:intersection

could it be {1,2,3,4,5,6,7,8,9} or {2,4} ??

Thank you in advanceeee