3(12-3n)=-9(n-4)

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Solution for 3(12-3n)=-9(n-4) equation: 



3(12-3n)=-9(n-4)

We move all terms to the left:

3(12-3n)-(-9(n-4))=0

We add all the numbers together, and all the variables

3(-3n+12)-(-9(n-4))=0

We multiply parentheses

-9n-(-9(n-4))+36=0



We calculate terms in parentheses: -(-9(n-4)), so:

-9(n-4)

We multiply parentheses

-9n+36

Back to the equation:

-(-9n+36)



We get rid of parentheses

-9n+9n-36+36=0

We add all the numbers together, and all the variables

=0

n=0/1

n=0

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