9+7n=-2(-6n+5)-1

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Solution for 9+7n=-2(-6n+5)-1 equation: 



9+7n=-2(-6n+5)-1

We move all terms to the left:

9+7n-(-2(-6n+5)-1)=0



We calculate terms in parentheses: -(-2(-6n+5)-1), so:

-2(-6n+5)-1

We multiply parentheses

12n-10-1

We add all the numbers together, and all the variables

12n-11

Back to the equation:

-(12n-11)



We get rid of parentheses

7n-12n+11+9=0

We add all the numbers together, and all the variables

-5n+20=0

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

-5n=-20

n=-20/-5

n=+4

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