SOLUTION: The length of a rectangle is seven less than it's width. The perimeter is 42 feet. What is the width of the rectangle in feet ?
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-> SOLUTION: The length of a rectangle is seven less than it's width. The perimeter is 42 feet. What is the width of the rectangle in feet ?
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L = w - 7
2L + 2w = 42
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2(w - 7) + 2w = 42
2w - 14 + 2w = 42
4w = 56
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answer:
w = 14 ft
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