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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



We calculate terms in parentheses: -(-2(5n-7)+1), so:

-2(5n-7)+1

We multiply parentheses

-10n+14+1

We add all the numbers together, and all the variables

-10n+15

Back to the equation:

-(-10n+15)



We get rid of parentheses

-7n+10n-15-9=0

We add all the numbers together, and all the variables

3n-24=0

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

3n=24

n=24/3

n=8

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