SOLUTION: The length of a rectangle is 12 times longer than the width. The perimeter is 84. What is the width? 84=2(12w)+2w...84=24w+2w Am I doing right?

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Question 233868: The length of a rectangle is 12 times longer than the width. The perimeter is 84. What is the width? 84=2(12w)+2w...84=24w+2w Am I doing right?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
L=12W
P=84
P=2L+2W
84=2(12w)+2w
84=24w+2w
84=26W
84/26=W
3.231=W ANS. FOR THE WIDTH.
L=12*3.231=38.76 ANS. FOR THE LENGTH
PROOF:
84=2*38.77+2*3.23
84=77.54+6.46
84=84