1. ## Solve For X

H=xW/x-8s

2. $H=\frac{xW}{x-8s}$

Multiplying both sides by x -8s we get:

$H(x-8s)=xW$
$Hx - 8Hs = xW$

If we subtract xW from both sides we get all the terms containing x on the left hand side:

$Hx - xW -8Hs = 0$

$Hx - xW = 8Hs$
$x(h-W) = 8Hs$
$x=\frac{8Hs}{h-w}$