Answer
$y=\frac{a}{9+3x}$, where $x\neq 0$.
Work Step by Step
The given equation is
$\Rightarrow a=9y+3yx$
Use distributive property.
$\Rightarrow a=y(9+3x)$
Divide both sides by $9+3x$.
$\Rightarrow \frac{a}{9+3x}=\frac{y(9+3x)}{9+3x}$
Simplify.
$\Rightarrow \frac{a}{9+3x}=y$
Hence, the rewritten literal equation is $y=\frac{a}{9+3x}$, where $x\neq 0$.
