The value of x = 24, then replace x in the expression by 24
[tex]\frac{24}{4}-9[/tex]Now let us find the value of 24/4
[tex]\frac{24}{4}=6[/tex][tex]\frac{x}{4}-9=6-9[/tex]Now subtract 9 from 6
[tex]6-9=-3[/tex]Then
[tex]\frac{x}{4}-9=\frac{24}{4}-9=6-9=-3[/tex]The value of the expression is -3 at x = 24
