Desperate math hw help

a=(180(n-2))/360
Solve for n

(180(n-2))/360 divide 180 by 360 to get 1/2

1(n - 2) /2 = a multiply n and a

n - 2 = 2a bring - 2 acorss to the other side

n = 2a + 2 or

n = 2(a + 1)

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