solve for m by rewriting the equation (transposition) In the following equation how would I rewrite the equation to solve for $m$?
$$z=\frac{-4m-8+\sqrt{(4m+8)^2+4(4(mx+y-4m-4))}}{8}$$
when
$x=66$ and $y=22$ and $z=10$

$(1)$. Multiply both sides with $8$ ; $(2)$. Add $4m+8$ to both sides. $(3)$. Square both sides. 
$(4)$. Subtract $(4m+8)^2$ from both sides. $(5)$. Divide both sides through $16$. You'll get: 
$$4z^2+z\,(4m+8)=m(x-4)+(y-4)$$
Now, expand the parentheses on both sides, move all terms containing m to one side, and all other terms to the other side, then divide through the factor of m, and you're done.
