I need to fine K…

how the hell do you isolate it..

hx[sup]2[/sup]=h[sub]1[/sub][sup]2[/sup] – x/L (h[sub]1[/sub][sup]2[/sup]- h[sub]2[/sub][sup]2[/sup]) + Nx/K (L-x)

edit – forget it i cant get the html code to work. ass

the eqation is this: Hx2=h12 – x/L (h12- h22) + Nx/K (L-x)

but i cant make the subscript work…