Find an expression for the (blue) shaded region and simplify it completely. (Notes: (1) Make sure the problem window is large enough to read all the dimensions, especially on the left and right. (2) The figure is not necessarily to scale.)

	$\displaystyle \leftarrow{x}+{9}\rightarrow$
$\displaystyle {x}+{7}$			$\displaystyle {x}+{4}$
		$\displaystyle \leftarrow{x}+{7}\rightarrow$

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