Let’s simplify the expression step by step!

First, distribute the 3 across the terms in the parentheses:
.

Now, putting it all together, we have:
.

Combine like terms ( ):
.

So, the simplified expression is .

Now, let me share some insights to enhance your understanding!

Did you know that algebra dates back to ancient civilizations like the Babylonians, who used it to solve problems related to property distribution and trade? They had a method for solving equations that laid the groundwork for the algebra we use today!

In practical scenarios, algebra, like this expression, is frequently used in various fields – from calculating expenses in a budget to determining the amount of materials needed for a project. Mastering these skills directly translates into real-world success, whether in personal finance or engineering!