Trouble understanding rewriting of an expression

I'm trying to inverse a simple function but got stuck with some algebra I cant remember.

I've got f (x) = 2x-1/x -1 and so far rewritten it to y(x-1) = 2x-1 but got stuck here. Reading the solution it show the next step as (y-2)x=y-1 but I'm at a loss trying to understand how they arrived here.(Headbang)

Re: Trouble understanding rewriting of an expression

Quote:

Originally Posted by

**dipsy34** I'm trying to inverse a simple function but got stuck with some algebra I cant remember.

I've got f (x) = 2x-1/x -1

The first think you need to recall is the order of operations.

Re: Trouble understanding rewriting of an expression

Quote:

Originally Posted by

**dipsy34** I'm trying to inverse a simple function but got stuck with some algebra I cant remember.

I've got f (x) = 2x-1/x -1 and so far rewritten it to y(x-1) = 2x-1 but got stuck here. Reading the solution it show the next step as (y-2)x=y-1 but I'm at a loss trying to understand how they arrived here.(Headbang)

I assume that you mean

............. If so:

Re: Trouble understanding rewriting of an expression

Quote:

Originally Posted by

**earboth** I assume that you mean

............. If so:

Super, thanks.