3(-9-4n)-4=6n-9(n+12)

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Solution for 3(-9-4n)-4=6n-9(n+12) equation: 



3(-9-4n)-4=6n-9(n+12)

We move all terms to the left:

3(-9-4n)-4-(6n-9(n+12))=0

We add all the numbers together, and all the variables

3(-4n-9)-(6n-9(n+12))-4=0

We multiply parentheses

-12n-(6n-9(n+12))-27-4=0



We calculate terms in parentheses: -(6n-9(n+12)), so:

6n-9(n+12)

We multiply parentheses

6n-9n-108

We add all the numbers together, and all the variables

-3n-108

Back to the equation:

-(-3n-108)



We add all the numbers together, and all the variables

-12n-(-3n-108)-31=0

We get rid of parentheses

-12n+3n+108-31=0

We add all the numbers together, and all the variables

-9n+77=0

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

-9n=-77

n=-77/-9

n=8+5/9

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