The given formula is:

$P = 2(L + W)$

We are solving for $L$.

Step-by-Step Solution:

1. Divide both sides by 2 to isolate $L + W$: $\frac{P}{2} = L + W$

2. Subtract $W$ from both sides to isolate $L$: $L = \frac{P}{2} - W$

Final Answer in Assignment Statement Format:

$L = (P / 2) - W$

Do you want further clarification or have any questions?

Here are 5 related questions to explore:

1. How do you rearrange other equations for specific variables?
2. How would the formula change if the equation included a different constant?
3. Can you solve similar problems with powers or roots included?
4. How would you solve for $W$ instead of $L$ in this equation?
5. How does the use of parentheses in formulas ensure proper calculation?

Tip: Always isolate the variable step-by-step, simplifying the equation as you go!