You can
put this solution on YOUR website!2L + 2W = P Sovle for L
First let's isolate the 2L by subtracting 2W from both sides of the equation...
2L = P - 2W
Now, in order to solve for L we can simply divide both sides of the equation by 2.

the 2's cancel on the left side of the equation, but they cannot cancel on the right because of the subtraction.

So this is as far as we can go, it cannot be simplified any further.
I hope this helps.
Good Luck!