-27=3(2r+9)

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Solution for -27=3(2r+9) equation: 



-27=3(2r+9)

We move all terms to the left:

-27-(3(2r+9))=0



We calculate terms in parentheses: -(3(2r+9)), so:

3(2r+9)

We multiply parentheses

6r+27

Back to the equation:

-(6r+27)



We get rid of parentheses

-6r-27-27=0

We add all the numbers together, and all the variables

-6r-54=0

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

-6r=54

r=54/-6

r=-9

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