12=3+9(x+12)

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Solution for 12=3+9(x+12) equation: 



12=3+9(x+12)

We move all terms to the left:

12-(3+9(x+12))=0



We calculate terms in parentheses: -(3+9(x+12)), so:

3+9(x+12)

determiningTheFunctionDomain
9(x+12)+3

We multiply parentheses

9x+108+3

We add all the numbers together, and all the variables

9x+111

Back to the equation:

-(9x+111)



We get rid of parentheses

-9x-111+12=0

We add all the numbers together, and all the variables

-9x-99=0

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

-9x=99

x=99/-9

x=-11

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