Rewrite the equation as .

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Add to both sides of the equation.

Solve for n s=180(n-2)

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# Solve for n s=180(n-2)

Rewrite the equation as .

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Add to both sides of the equation.

Solve for n s=180(n-2)