(n-2)+n+n=180

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



(n-2)+n+n=180

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

2n+n-2-180=0

We add all the numbers together, and all the variables

3n-182=0

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

3n=182

n=182/3

n=60+2/3

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