Answer: After 3 semesters, Duke and Kila will have the same number of credits.
Explanation:
Alright, same deal, set up a equality. It should look something like this:
22+6x=4+12x
Move the varible to the left of the equation:
6x-12x=4-22
Simplify
-6x=-18 --> Two negatives make a positive
x=3