# 7 + 7 + 6 = 20

Logic Level 4

$\begin{array} { l l l l l l } & S & E & V & E & N \\ & S & E & V & E & N \\ +& & & S & I & X \\ \hline \\ T & W & E& N&T&Y\\ \end{array}$

Each letter represents a distinct digit.

What is the value of $W$?

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