I need to simply this equation, but I got stuck.

h/(4-sqrt(16+h)) = y

First, I multiplied (4+sqrt(16+h)/(4+sqrt(16+h) to both sides, and I ended up with h(4+sqrt(16+h)/-h. Is this correct? (I tried to graph both equations to see if I would get the same graph, but I didn't, which means it's wrong.)
Please help me out!

h/(4-sqrt(16+h))*(4+sqrt(16+h))/(4+sqrt(16+h))

h(4+sqrt(16+h))/4-(16-h)=

h(4+sqrt(16+h))/(-12-h)= then proceed. There is not much you can do.