Answer:
[tex]\frac{4+k}{2} -8[/tex]
Step-by-step explanation:
We're going to have to work backwards.
The sum of 4 and k is [tex]4+k[/tex].
Half is simply that divided by 2.
[tex]\frac{4+k}{2}[/tex]
Now, we'll subtract 8 from it.
[tex]\frac{4+k}{2} -8[/tex]
Bam!