Solve P = 2L + 2W for w (how do i set it up?)

Re: Solve for w

P=2L + 2W

Your problem says to solve for w. Or do you mean solve for W? There is a difference.
At any rate, to solve an equation such as this for one of the variables, get the term containing the sought after variable all by itself on one side of the equation and all other terms on the other side. Of course, you have to do this by adding or subtraction the same thing(s) to/from both sides. Once you have the term isolated, do what is necessary (multiply or divide both sides by the same thing) to get a coefficient of 1 for the term with the variable you are after. That does it.
 
Re: Solve for w

Hi Enix:

There is nothing to set up. This exercise wants you to perform algebraic manipulations to the equation so that you end up with the symbol w all by itself on one side of the equal sign.

Here's an example.

Solve 5L = 3w + x for w.

I start by getting the term 3w by itself; I can accomplish this by subtracting the x, but any operation must be done to BOTH sides of the equation.

Subtract x from both sides.

5L - x = 3w

Now, I can get the w all by itself by dividing both sides of the equation by 3.

(5/3)L - (x/3) = w

Please let us know exactly where you are stuck. Otherwise, we have to guess at what kind of help you need.

Cheers,

~ Mark :)
 
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