[tex]\text{Hello there!}\\\\\text{Solve for n:}\\\\c=\frac{c-5}{n}\\\\\text{Multiply both sides by n}\\\\nc=c-5\\\\\text{Divide both sides by c}\\\\n=\frac{c-5}{c}\\\\\large\boxed{\text{Answer: }n=\frac{c-5}{c}}[/tex]
