we need to find f(-5) to replace on the operation
so
[tex]\begin{gathered} f(-5)=3(-5)-2 \\ f(-5)=-15-2 \\ f(-5)=-17 \end{gathered}[/tex]now, do the finall operation
[tex]\begin{gathered} (8)-f(-5) \\ 8-(-17) \\ 8+17 \\ =25 \end{gathered}[/tex]so, the solution is 25
