Answer: K = 8
Explanation:
For these kinds of problems you have to isolate the variable, the one we're trying to isolate is k.
First step is adding 4 to both sides to get rid of the -4 on the left.
Once you do that youll have 4k = 36.
Now divide both sides by 4 to get the k by itself, this'll give you k = 8.
You can plug it in to see if it's right.
4(8) - 4 = 32
36 - 4 = 32
32 = 32
So its correct