3r-9=3(r-3)

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



3r-9=3(r-3)

We move all terms to the left:

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



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

3(r-3)

We multiply parentheses

3r-9

Back to the equation:

-(3r-9)



We get rid of parentheses

3r-3r+9-9=0

We add all the numbers together, and all the variables

=0

r=0/1

r=0

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