SOLUTION: The length of a rectangle is three more than twice the width. If the perimeter of the rectangle is 30 km, find the length and width.

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Question 823568: The length of a rectangle is three more than twice the width. If the perimeter of the rectangle is 30 km, find the length and width.
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
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x = 2y + 3
2x + 2y = 30
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put the system of linear equations into standard form
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x - 2y = 3
2x + 2y = 30
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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answer:
x= length = 11 km
y= width = 4 km
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