8=9(3r-9)

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Solution for 8=9(3r-9) equation: 



8=9(3r-9)

We move all terms to the left:

8-(9(3r-9))=0



We calculate terms in parentheses: -(9(3r-9)), so:

9(3r-9)

We multiply parentheses

27r-81

Back to the equation:

-(27r-81)



We get rid of parentheses

-27r+81+8=0

We add all the numbers together, and all the variables

-27r+89=0

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

-27r=-89

r=-89/-27

r=3+8/27

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