Answer:

Step-by-step explanation:

First, you should distribute the -1 on the right.

Next, add 8n to both sides. This should cancel out the 8n.

Now, add 8 to both sides. This will get n by itself.

Your answer is n = -2.
No solution, many solution
Using the Newton's second Law
F≠0
F=ma
m= 0.25 kg
a= 15.5 m/s
F=ma
F=(.25)(15.5)
F=3.875 N
Ta daa!
Hope that was helpful!
if it was please rate this as "Brainiest"
PS this would be better suited to the "Physics" section