Solve for n
n=8
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180n-360=3\times 360
Use the distributive property to multiply 180 by n-2.
180n-360=1080
Multiply 3 and 360 to get 1080.
180n=1080+360
Add 360 to both sides.
180n=1440
Add 1080 and 360 to get 1440.
n=\frac{1440}{180}
Divide both sides by 180.
n=8
Divide 1440 by 180 to get 8.
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