161=-5(5-7n)-4n

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Solution for 161=-5(5-7n)-4n equation: 



161=-5(5-7n)-4n

We move all terms to the left:

161-(-5(5-7n)-4n)=0

We add all the numbers together, and all the variables

-(-5(-7n+5)-4n)+161=0



We calculate terms in parentheses: -(-5(-7n+5)-4n), so:

-5(-7n+5)-4n

We add all the numbers together, and all the variables

-4n-5(-7n+5)

We multiply parentheses

-4n+35n-25

We add all the numbers together, and all the variables

31n-25

Back to the equation:

-(31n-25)



We get rid of parentheses

-31n+25+161=0

We add all the numbers together, and all the variables

-31n+186=0

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

-31n=-186

n=-186/-31

n=+6

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