To solve this equation, subtract 9 from both sides. You will get an equivalent equation
N = -41 - 9, or N = -50.
It is the solution to your original equation.
Answer. N = -50.
Solved.
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As I see, you have problems with solving simplest linear equations.
For the people who want to learn the procedure on how to solve such equations, there is a lesson in this site
- HOW TO solve a linear equation