Understanding the Perimeter Equation: \( 2(w + 3w) = 48 \)

Calculating the perimeter of geometric shapes starts with understanding key expressions and solving equations that describe them. One common algebraic challenge involves perimeter formulas in terms of a variable. Consider the equation:

\[
2(w + 3w) = 48
\]

Understanding the Context

This equation represents a real-world scenario where you’re working with the perimeter of a shape whose side lengths involve a variable \( w \), multiplied by constants. Solving it yields the value of \( w \), which helps determine the actual size of the perimeter.

Simplifying the Expression Inside the Parentheses

The expression \( w + 3w \) represents the sum of two related side lengths—possibly adjacent sides of a rectangle or similar figure. Combining like terms:

\[
w + 3w = 4w
\]

Key Insights

Substitute this back into the original equation:

\[
2(4w) = 48
\]

Solving for \( w \)

Now simplify:

\[
8w = 48
\]

Final Thoughts

To isolate \( w \), divide both sides by 8:

\[
w = \frac{48}{8} = 6
\]

Thus, the value of \( w \) is 6.

Determining the Perimeter

Now that you know \( w = 6 \), plug it into the expression \( w + 3w = 4w \):

\[
4w = 4 \ imes 6 = 24
\]

The full perimeter is twice this sum, as per the formula:

\[
\ ext{Perimeter} = 2(w + 3w) = 2 \ imes 24 = 48
\]

This confirms the solution satisfies the original equation.

Real-Life Application and Key Takeaways