Solve for b b/(f-h^2)=r

$\frac{b}{f - h^{2}} = r$

Multiply both sides by $f - h^{2}$ .

$\frac{b}{f - h^{2}} (f - h^{2}) = r (f - h^{2})$

Simplify.

Simplify the left side.

Cancel the common factor of $f - h^{2}$ .

Cancel the common factor.

$\frac{b}{f - h^{2}} (f - h^{2}) = r (f - h^{2})$

Rewrite the expression.

$b = r (f - h^{2})$

Simplify the right side.

Simplify $r (f - h^{2})$ .

Apply the distributive property.

$b = r f + r (- h^{2})$

Simplify the expression.

Rewrite using the commutative property of multiplication.

$b = r f - r h^{2}$

Reorder $r$ and $f$ .

$b = f r - r h^{2}$

Move $r$ .

$b = f r - h^{2} r$

Reorder $f r$ and $- h^{2} r$ .

$b = - h^{2} r + f r$