=3(x+7)-9

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Solution for =3(x+7)-9 equation: 



=3(x+7)-9

We move all terms to the left:

-(3(x+7)-9)=0



We calculate terms in parentheses: -(3(x+7)-9), so:

3(x+7)-9

We multiply parentheses

3x+21-9

We add all the numbers together, and all the variables

3x+12

Back to the equation:

-(3x+12)



We get rid of parentheses

-3x-12=0

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

-3x=12

x=12/-3

x=-4

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