7n+n=80

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Solution for 7n+n=80 equation: 



7n+n=80

We move all terms to the left:

7n+n-(80)=0

We add all the numbers together, and all the variables

8n-80=0

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

8n=80

n=80/8

n=10

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