(3x-9)=(12x+18)

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Solution for (3x-9)=(12x+18) equation: 



(3x-9)=(12x+18)

We move all terms to the left:

(3x-9)-((12x+18))=0

We get rid of parentheses

3x-((12x+18))-9=0



We calculate terms in parentheses: -((12x+18)), so:

(12x+18)

We get rid of parentheses

12x+18

Back to the equation:

-(12x+18)



We get rid of parentheses

3x-12x-18-9=0

We add all the numbers together, and all the variables

-9x-27=0

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

-9x=27

x=27/-9

x=-3

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