9=-1/3r

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Solution for 9=-1/3r equation: 



9=-1/3r

We move all terms to the left:

9-(-1/3r)=0



Domain of the equation: 3r)!=0

r!=0/1

r!=0

r∈R



We get rid of parentheses

1/3r+9=0

We multiply all the terms by the denominator


9*3r+1=0

Wy multiply elements

27r+1=0

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

27r=-1

r=-1/27

r=-1/27

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