Question

I need help PLzZzzzz

Answer 1

$x(x-b)-2k=L$

First add 2k to both sides
$x(x-b)-2k+2k=L+2k$
$x(x-b)=L+2k$

Then divide both sides by (x-b) and simplify
$\frac{x(x-b)}{x-b}=\frac{L+2k}{x-b}$
$x=\frac{L+2k}{x-b}$