54=-9(x-9)

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Solution for 54=-9(x-9) equation: 



54=-9(x-9)

We move all terms to the left:

54-(-9(x-9))=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+54=0

We add all the numbers together, and all the variables

9x-27=0

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

9x=27

x=27/9

x=3

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