140=180*(n-2)/n

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Solution for 140=180*(n-2)/n equation: 



140=180(n-2)/n

We move all terms to the left:

140-(180(n-2)/n)=0



Domain of the equation: n)!=0

n!=0/1

n!=0

n∈R



We multiply all the terms by the denominator


-(180(n-2)+140*n)=0



We calculate terms in parentheses: -(180(n-2)+140*n), so:

180(n-2)+140*n

We add all the numbers together, and all the variables

140n+180(n-2)

We multiply parentheses

140n+180n-360

We add all the numbers together, and all the variables

320n-360

Back to the equation:

-(320n-360)



We get rid of parentheses

-320n+360=0

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

-320n=-360

n=-360/-320

n=1+1/8

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