3=7n+7-4

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Solution for 3=7n+7-4 equation: 



3=7n+7-4

We move all terms to the left:

3-(7n+7-4)=0

We add all the numbers together, and all the variables

-(7n+3)+3=0

We get rid of parentheses

-7n-3+3=0

We add all the numbers together, and all the variables

-7n=0

n=0/-7

n=0

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