SOLUTION: The perimeter of a rectangular garden is 126m. The length of each side is 3x + 16 how do I find the value of x -5

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Question 898783: The perimeter of a rectangular garden is 126m. The length of each side is
3x + 16 how do I find the value of x -5
Answer by josgarithmetic(39800) About Me  (Show Source):
You can put this solution on YOUR website!
You are given an expression for length but not for width.
2%283x%2B16%29%2B2%2Aw=126, according to formula for perimeter.
Solve for x and then evaluate x-5. The obstacle is that you do not have enough information on either variable x or w, so they are both still unknown. You can find x, but x will still be in terms of the unknown width.