could someone step me through this please. I know the answer but can't seem to get it myself.
simplify x-{2x-1 [-x-(1-x)]}

Question

could someone step me through this please. I know the answer but can't seem to get it myself. 
simplify x-{2x-1 [-x-(1-x)]}

hartnn · Answer

start from innermost bracket, 
what is [-x-(1-x)] =.... ? 

or first try what is -(1-x) =... ?

anonymous · Answer

-1+x

hartnn · Answer

yes, now what is 
-x-1+x =... ?

anonymous · Answer

-1?

hartnn · Answer

that is correct, so innermost bracket [-x-(1-x)]  = -1 
now , {2x-1 [-x-(1-x)]} = {2x-1 [-1]} =.... ?

or first try what is -1 [-1] =... ?

anonymous · Answer

1

hartnn · Answer

good, so
{2x+1} for that bracket, right ?
last step,
x-{2x+1} =... ?

anonymous · Answer

-x-1

hartnn · Answer

thats correct final answer.

anonymous · Answer

Thank you. I dont know where I go wrong but iI iwiwiiwiliwill igigo ibibaibaciback ioiovioveiover iiiit iaianiand isiseisee iwiwhiwheiwheriwhere imimy imimiimisimistimistaimistakimistake iiiis.

anonymous · Answer

lol  what happened then???

hartnn · Answer

did you just banged your head with keybord ! :P

anonymous · Answer

haha  I think the keyboard is having a breakdown :)

hartnn · Answer

ok, welcome ^_^

anonymous · Answer

and to think I'm studying this by choice!, Maybe I should bang my head on the keybooard :)

hartnn · Answer

don't worry, math is not difficult,
with some practice, its just a piece of cake ;)

anonymous · Answer

I hope so. the unit is called Fundamental Mathematics but there is a lot of presumed knowledge. And the timeframe doesnt allow for much practice.

anonymous · Answer

I looked at my last question in my assignment and realised I have to go right back to basics. There are some gaps in my knowledge  obviously.