Answer
width = 9 feet, length = 15 feet
Work Step by Step
length = 2*width-3
$l=2w-3$
$l+2w=33$
$l=2w-3$
$l+2w=33$
$2w-3+2w=33$
$4w-3=33$
$4w=36$
$4w/4=36/4$
$w=9$
$l=2w-3$
$l=2*9-3$
$l=18-3$
$l=15$
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