7) \( 5(10-1) \)

Let’s break this down step by step! First, you solve the expression inside the parentheses. So, \(10 - 1\) equals \(9\). Then, you take that result and multiply it by \(5\), giving you \(5 \times 9\), which equals \(45\). Voila! In a similar vein, this mathematical approach mirrors real-life scenarios where simplifying tasks leads to clearer, quicker decisions. Just like we manage our time by prioritizing what needs to be done first, breaking down math problems helps tackle them more efficiently!