9(9-x)=6(6+x)

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



9(9-x)=6(6+x)

We move all terms to the left:

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

We add all the numbers together, and all the variables

9(-1x+9)-(6(x+6))=0

We multiply parentheses

-9x-(6(x+6))+81=0



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

6(x+6)

We multiply parentheses

6x+36

Back to the equation:

-(6x+36)



We get rid of parentheses

-9x-6x-36+81=0

We add all the numbers together, and all the variables

-15x+45=0

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

-15x=-45

x=-45/-15

x=+3

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