6x-18=H(3x+9)

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Solution for 6x-18=H(3x+9) equation: 



6x-18=(3x+9)

We move all terms to the left:

6x-18-((3x+9))=0



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

(3x+9)

We get rid of parentheses

3x+9

Back to the equation:

-(3x+9)



We get rid of parentheses

6x-3x-9-18=0

We add all the numbers together, and all the variables

3x-27=0

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

3x=27

x=27/3

x=9

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