math
posted by Kassie .
A rectangular lot is surrounded by a rock wall 46 meters in length. What are the dimensions of the lot if its length is 5 meters longer than its width

P = 2L + 2W
46 = 2(W + 5) + 2W
46 = 2W + 10 + 2W
46  10 = 4W
36 = 4W
? = W