Answer:N = 1
Explanation:
6N-12=-18
You have to get 6N by itself, so take the -12 and make it a +12. That makes the 12 cancel out. So now you have 6N by itself. What you do one one side you have to do to the other side so take the positive 12 and add it to the -18. Now you have 6N=-6. Now divide, then you have your answer!!!
N=1