12-5n=-3(-7n-4)

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Solution for 12-5n=-3(-7n-4) equation: 



12-5n=-3(-7n-4)

We move all terms to the left:

12-5n-(-3(-7n-4))=0



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

-3(-7n-4)

We multiply parentheses

21n+12

Back to the equation:

-(21n+12)



We get rid of parentheses

-5n-21n-12+12=0

We add all the numbers together, and all the variables

-26n=0

n=0/-26

n=0

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