161=-7n-7(-7n+7)

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Solution for 161=-7n-7(-7n+7) equation: 



161=-7n-7(-7n+7)

We move all terms to the left:

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



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

-7n-7(-7n+7)

We multiply parentheses

-7n+49n-49

We add all the numbers together, and all the variables

42n-49

Back to the equation:

-(42n-49)



We get rid of parentheses

-42n+49+161=0

We add all the numbers together, and all the variables

-42n+210=0

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

-42n=-210

n=-210/-42

n=+5

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