3(-9-4n)-4=8n-9(2n+12)

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Solution for 3(-9-4n)-4=8n-9(2n+12) equation: 



3(-9-4n)-4=8n-9(2n+12)

We move all terms to the left:

3(-9-4n)-4-(8n-9(2n+12))=0

We add all the numbers together, and all the variables

3(-4n-9)-(8n-9(2n+12))-4=0

We multiply parentheses

-12n-(8n-9(2n+12))-27-4=0



We calculate terms in parentheses: -(8n-9(2n+12)), so:

8n-9(2n+12)

We multiply parentheses

8n-18n-108

We add all the numbers together, and all the variables

-10n-108

Back to the equation:

-(-10n-108)



We add all the numbers together, and all the variables

-12n-(-10n-108)-31=0

We get rid of parentheses

-12n+10n+108-31=0

We add all the numbers together, and all the variables

-2n+77=0

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

-2n=-77

n=-77/-2

n=38+1/2

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