Hello!
Answer:
n=-9
*The answer must have a negative sign.*
Explanation:
First, you subtract by 7 from both sides of an equation.

Then, you simplify.

Next, you divide by 2 from both sides of an equation.

And finally, simplify and solve. You can also dividing into the groups.


Hope this helps!
-Charlie
Have a great day!
Thanks!
:)
:D