12+7n=-3(n-4)-7n

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Solution for 12+7n=-3(n-4)-7n equation: 



12+7n=-3(n-4)-7n

We move all terms to the left:

12+7n-(-3(n-4)-7n)=0



We calculate terms in parentheses: -(-3(n-4)-7n), so:

-3(n-4)-7n

We add all the numbers together, and all the variables

-7n-3(n-4)

We multiply parentheses

-7n-3n+12

We add all the numbers together, and all the variables

-10n+12

Back to the equation:

-(-10n+12)



We get rid of parentheses

7n+10n-12+12=0

We add all the numbers together, and all the variables

17n=0

n=0/17

n=0

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