18=6(x+6)+3x

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



18=6(x+6)+3x

We move all terms to the left:

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



We calculate terms in parentheses: -(6(x+6)+3x), so:

6(x+6)+3x

We add all the numbers together, and all the variables

3x+6(x+6)

We multiply parentheses

3x+6x+36

We add all the numbers together, and all the variables

9x+36

Back to the equation:

-(9x+36)



We get rid of parentheses

-9x-36+18=0

We add all the numbers together, and all the variables

-9x-18=0

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

-9x=18

x=18/-9

x=-2

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