180(n-2)=90n

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



180(n-2)=90n

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-90n+180n-360=0

We add all the numbers together, and all the variables

90n-360=0

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

90n=360

n=360/90

n=4

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