\begin{tabular}{l} 8:57 PM Thu Feb 20 \\ \& Emilio Mejia Felici... \( \quad \) R. 5 Evaluate multi-variable expressions \\ Evaluate the expression for \( k=-5 \) and \( m=9 \). \\ \( k-m=\square \) Video \\ \hline\end{tabular}

To evaluate the expression \( k - m \) with the given values \( k = -5 \) and \( m = 9 \), simply substitute these values into the expression. This gives you: \[ k - m = -5 - 9 = -14. \] So, the answer is \( -14 \). Mathematics involving multiple variables can sometimes feel overwhelming, but it’s just about understanding how to plug in values correctly. Don't forget to keep track of your signs; negative numbers can be tricky! They often sneak up on you if you're not careful.