Answer :

TSO
So:

Let us simply the parenthesis first.

So we have [tex]\sf{(8-6x+12)}[/tex]

We can rearrange the terms and get:

[tex]\sf{(8+12-6x)}[/tex]

Which is equal to

[tex]\sf{(20-6x)}[/tex]

So now we have to complete it by multiplying it all by 1/4 which is basically dividing it by 4.

So:

[tex]\sf{\frac{20-6x}{4}}[/tex]

Simplifying that, we get:

[tex]\sf{5-\frac{6}{4}x}[/tex]

And reducing that farther we finally get:

[tex]\sf{5-\frac{3}{2}x}[/tex]

Which is your final answer :)