3+8n+n-7=7(-n+4)-7(1-3n)

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Solution for 3+8n+n-7=7(-n+4)-7(1-3n) equation: 



3+8n+n-7=7(-n+4)-7(1-3n)

We move all terms to the left:

3+8n+n-7-(7(-n+4)-7(1-3n))=0

We add all the numbers together, and all the variables

8n+n-(7(-1n+4)-7(-3n+1))+3-7=0

We add all the numbers together, and all the variables

9n-(7(-1n+4)-7(-3n+1))-4=0



We calculate terms in parentheses: -(7(-1n+4)-7(-3n+1)), so:

7(-1n+4)-7(-3n+1)

We multiply parentheses

-7n+21n+28-7

We add all the numbers together, and all the variables

14n+21

Back to the equation:

-(14n+21)



We get rid of parentheses

9n-14n-21-4=0

We add all the numbers together, and all the variables

-5n-25=0

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

-5n=25

n=25/-5

n=-5

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