\begin{tabular}{l} 8:57PM Thu Feb 20 \\ \& Emilio Mejia Felici... \( \quad \) R. 5 Evaluate multi-variable expressions \\ Evaluate the expression for \( d=2 \) and \( f=-10 \). \\ \( d-f=\square \) Video \\ \hline\end{tabular}

The expression \( d - f \) is pretty straightforward! By substituting the given values, we have \( 2 - (-10) \). Since subtracting a negative is the same as adding a positive, this simplifies to \( 2 + 10 = 12 \). So, when you evaluate that expression, it gives you \( 12 \). Now, let's think about this in the context of real-life scenarios. Multi-variable expressions can help you calculate things like budget adjustments or even temperature changes! For instance, if \( d \) is the amount of money you have and \( f \) is money you owe, you’re essentially figuring out your net worth. It's a fun way to see how numbers interact in our daily lives!