Hi,

I've got the following problem:

I add y to both sides to rid y on the right. Then I subtract 1 from both sides to get this:

Divide both sides by 2 to get:

then divide by to get:

multiply the fraction by to get rid of the radical and that leaves me with:

The book gives the answer as:

I can't tell where I've taken a wrong step.

Ideas?

Thanks in advance,

mb