12^2=9(x+9)

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Solution for 12^2=9(x+9) equation: 



12^2=9(x+9)

We move all terms to the left:

12^2-(9(x+9))=0

We add all the numbers together, and all the variables

-(9(x+9))+144=0



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

9(x+9)

We multiply parentheses

9x+81

Back to the equation:

-(9x+81)



We get rid of parentheses

-9x-81+144=0

We add all the numbers together, and all the variables

-9x+63=0

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

-9x=-63

x=-63/-9

x=+7

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