Evaluate the expression when \( a=4 \) and \( b=-3 \). \begin{tabular}{|c|c|}\hline\( a-5 b \) \\ \( \square \) & 5 \\ \hline\end{tabular}

To evaluate the expression \( a - 5b \) when \( a = 4 \) and \( b = -3 \), we start by substituting the values into the expression. 1. Substitute \( a \) and \( b \): \[ 4 - 5(-3) \] 2. Calculate \( 5(-3) \): \[ 5(-3) = -15 \] 3. Now substitute this back into the expression: \[ 4 - (-15) = 4 + 15 \] 4. Add the numbers: \[ 4 + 15 = 19 \] Thus, the evaluated expression is \( 19 \).