In order to evaluate this expression for x = 3 and y = 7, let's use these values in the expression and calculate its final value. So we have:
[tex]\begin{gathered} 5x+4y \\ =5\cdot3+4\cdot7 \\ =15+28 \\ =43 \end{gathered}[/tex]So the value of this expression for x = 3 and y = 7 is 43.
