# A system

Algebra Level 4

$\large \begin{cases} a+b=n\\ \dfrac{1}{a}+\dfrac{1}{b}=\dfrac{-n}{896m(n+896m)} \end{cases}$

Consider the system of equations above. If $$a-b=2016$$, what is the maximum possible value of the product $$mn$$?

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