180(n-2)/n=90

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Solution for 180(n-2)/n=90 equation: 


D( n )

n = 0

n = 0

n = 0

n in (-oo:0) U (0:+oo)

(180*(n-2))/n = 90 // - 90

(180*(n-2))/n-90 = 0

(180*(n-2))/n+(-90*n)/n = 0

180*(n-2)-90*n = 0

90*n-360 = 0

(90*n-360)/n = 0

(90*n-360)/n = 0 // * n

90*n-360 = 0

90*n-360 = 0 // + 360

90*n = 360 // : 90

n = 360/90

n = 4

n = 4

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