7n+7n+6n=180

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Solution for 7n+7n+6n=180 equation: 



7n+7n+6n=180

We move all terms to the left:

7n+7n+6n-(180)=0

We add all the numbers together, and all the variables

20n-180=0

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

20n=180

n=180/20

n=9

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