SOLUTION: What is the solution to to the equation P=2l + 2w when solved for w?

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Question 870134: What is the solution to to the equation P=2l + 2w when solved for w?
Answer by josgarithmetic(39621) About Me  (Show Source):
You can put this solution on YOUR website!
TWO steps.
(1) Additive Inverse of 21;
(2) Multiplicative Inverse of 2.
THOSE are the reasons for the steps to be chosen.