I'm assuming you want to work out the monthly payment. So:-
12x + 25 = 193 where x = monthly payment
12x = 193 - 25 = 168
x = 168/12
= $14 Answer
If it is asking for monthly cost then this is how you do it. 193-25=168 for the one time fee. 12 months in a year so 168/12=14
The monthly cost is $14.
