n+4+7n=20

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Solution for n+4+7n=20 equation: 



n+4+7n=20

We move all terms to the left:

n+4+7n-(20)=0

We add all the numbers together, and all the variables

8n-16=0

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

8n=16

n=16/8

n=2

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