90=180(n-2)

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



90=180(n-2)

We move all terms to the left:

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



We calculate terms in parentheses: -(180(n-2)), so:

180(n-2)

We multiply parentheses

180n-360

Back to the equation:

-(180n-360)



We get rid of parentheses

-180n+360+90=0

We add all the numbers together, and all the variables

-180n+450=0

We move all terms containing n to the left, all other terms to the right

-180n=-450

n=-450/-180

n=2+1/2

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