9+12x=3x+9(1+x)

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Solution for 9+12x=3x+9(1+x) equation: 



9+12x=3x+9(1+x)

We move all terms to the left:

9+12x-(3x+9(1+x))=0

We add all the numbers together, and all the variables

12x-(3x+9(x+1))+9=0



We calculate terms in parentheses: -(3x+9(x+1)), so:

3x+9(x+1)

We multiply parentheses

3x+9x+9

We add all the numbers together, and all the variables

12x+9

Back to the equation:

-(12x+9)



We get rid of parentheses

12x-12x-9+9=0

We add all the numbers together, and all the variables

=0

x=0/1

x=0

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