Answer :
[tex]\frac{7z-3}{4}[/tex]
For z = 5, we get:
[tex]\frac{7(5)-3}{4}[/tex]Solving the product:
[tex]\frac{35-3}{4}[/tex]Solving the difference:
[tex]\frac{32}{4}[/tex]Solving the quotient:
[tex]8[/tex]Therefore, for z = 5, the expression is 8.