Answer:
I think that the answer is
b = 7
Here is the step-by-step solution.....
See the attached files for the step-by-step solution...><><
[ (12 - n)/7 ] = -1
12- n = -7
-n = -19
n = 19
Answer:
25
I hope i got it in time :)
Two !!!! ... unless this is some riddle and there's a huge in depth meaningful answer i'm unaware about o.O