3=(3x+9x)

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



3=(3x+9x)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

(+12x)

We get rid of parentheses

12x

Back to the equation:

-(12x)



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

-12x=-3

x=-3/-12

x=1/4

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