(4n-20)+(2n+20)+n=180

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Solution for (4n-20)+(2n+20)+n=180 equation: 



(4n-20)+(2n+20)+n=180

We move all terms to the left:

(4n-20)+(2n+20)+n-(180)=0

We add all the numbers together, and all the variables

n+(4n-20)+(2n+20)-180=0

We get rid of parentheses

n+4n+2n-20+20-180=0

We add all the numbers together, and all the variables

7n-180=0

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

7n=180

n=180/7

n=25+5/7

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