r-3=3(3r+1)

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Solution for r-3=3(3r+1) equation: 



r-3=3(3r+1)

We move all terms to the left:

r-3-(3(3r+1))=0



We calculate terms in parentheses: -(3(3r+1)), so:

3(3r+1)

We multiply parentheses

9r+3

Back to the equation:

-(9r+3)



We get rid of parentheses

r-9r-3-3=0

We add all the numbers together, and all the variables

-8r-6=0

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

-8r=6

r=6/-8

r=-3/4

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