104=-7(7-3n)

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Solution for 104=-7(7-3n) equation: 



104=-7(7-3n)

We move all terms to the left:

104-(-7(7-3n))=0

We add all the numbers together, and all the variables

-(-7(-3n+7))+104=0



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

-7(-3n+7)

We multiply parentheses

21n-49

Back to the equation:

-(21n-49)



We get rid of parentheses

-21n+49+104=0

We add all the numbers together, and all the variables

-21n+153=0

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

-21n=-153

n=-153/-21

n=7+2/7

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