Solve for m (complex solution)
\left\{\begin{matrix}m=\frac{xy+9}{x+y}\text{, }&x\neq -3\text{ and }x\neq 3\text{ and }y\neq -x\\m\neq x\text{, }&\left(x=3\text{ and }y=-3\right)\text{ or }\left(x=-3\text{ and }y=3\right)\end{matrix}\right.
Solve for x (complex solution)
\left\{\begin{matrix}x=-\frac{9-my}{y-m}\text{, }&m\neq 3\text{ and }m\neq -3\text{ and }y\neq m\\x\neq m\text{, }&\left(m=-3\text{ and }y=-3\right)\text{ or }\left(m=3\text{ and }y=3\right)\end{matrix}\right.
Solve for m
\left\{\begin{matrix}m=\frac{xy+9}{x+y}\text{, }&y\neq -x\text{ and }|x|\neq 3\\m\neq x\text{, }&\left(x=-3\text{ and }y=3\right)\text{ or }\left(x=3\text{ and }y=-3\right)\end{matrix}\right.
Solve for x
\left\{\begin{matrix}x=-\frac{9-my}{y-m}\text{, }&|m|\neq 3\text{ and }y\neq m\\x\neq m\text{, }&\left(m=-3\text{ and }y=-3\right)\text{ or }\left(m=3\text{ and }y=3\right)\end{matrix}\right.
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