Question

7z-3-------- 4. when z=5

Answer 1

`(7z-3)/(4)`

For z = 5, we get:

`(7(5)-3)/(4)`

Solving the product:

`(35-3)/(4)`

Solving the difference:

`(32)/(4)`

Solving the quotient:

`8`

Therefore, for z = 5, the expression is 8.