\( x = 12 \)

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• \( 3x - 2x - 7 = 5 \)
• \( x - 7 = 5 \)
• Add 7 to both sides:
• Question:** A rectangle has a perimeter of 48 cm and a length that is twice its width. What are the dimensions of the rectangle?
• Let width = \( w \), then length = \( 2w \).
• Perimeter = 2(length + width) = 48

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