SOLUTION: A stained glass window in a church is in the shape of a square. The perimeter of the square is 7 times the length of a side decreased by 12 meters. Find the length of a side of the

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Question 817655: A stained glass window in a church is in the shape of a square. The perimeter of the square is 7 times the length of a side decreased by 12 meters. Find the length of a side of the window
Answer by FightinBlueHens(27) About Me  (Show Source):
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The square has 4 equal sides. If x is the length of one side ofthe square, then the perimeter of a square is 4x. We also know that the perimeter is 12 less than 7 times one of the sides, so if 4x and 12 less than 7x gives the perimeter, set those two equal to each other and solve.
4x= 7x-12
-3x =-12 OR 4x+12 = 7x -->12 = 4x
x=4