Answer :

TSO
[tex]\sf{18 - 4( 8m + 5)}[/tex]

Distribute the [tex]\sf{-4}[/tex] inside the parenthesis

[tex]\sf{18 - 32m - 20}[/tex]

Now add/subtract like terms:

[tex]\sf{-2 - 32m}[/tex]

Which is your answer. :)