Solve for n
n=8
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180n-360-135n=0
Subtract 135n from both sides.
45n-360=0
Combine 180n and -135n to get 45n.
45n=360
Add 360 to both sides. Anything plus zero gives itself.
n=\frac{360}{45}
Divide both sides by 45.
n=8
Divide 360 by 45 to get 8.
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