x represents the height of the leg of the coffee table, plug it in and we'll see
4(2x) + 4(x)
= 4 (2*coffeetableleg) + 4 (coffeetableleg)
= 4 (kitchentableleg) + 4 (coffeetableleg)
= total length of kitchen table legs + total length of coffee table legs
= Total length measurement of table legs needed to build a kitchen table and a coffee table
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