# Cryptotastic #3

Algebra Level 4

$\begin{array} { l l l } & A & B \\ & C & D \\ + & E & F \\ \hline G & H & I \\ \end{array}$

In the above cryptogram all the letters represent distinct digits from 1 to 9.

If $$M$$ is the maximum possible value of $$\overline{GHI}$$ and $$N$$ is the minimum possible value of $$\overline{GHI}$$, then find $$M - N$$.

If you're interested try Cryptotastic and Cryptotastic #2.

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