2n+7n=4+n-4+8n

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Solution for 2n+7n=4+n-4+8n equation: 



2n+7n=4+n-4+8n

We move all terms to the left:

2n+7n-(4+n-4+8n)=0

We add all the numbers together, and all the variables

2n+7n-(+9n)=0

We add all the numbers together, and all the variables

9n-(+9n)=0

We get rid of parentheses

9n-9n=0

We add all the numbers together, and all the variables

=0

n=0/1

n=0

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