12+18r-18=-9(-2r+1)+3

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Solution for 12+18r-18=-9(-2r+1)+3 equation: 



12+18r-18=-9(-2r+1)+3

We move all terms to the left:

12+18r-18-(-9(-2r+1)+3)=0

We add all the numbers together, and all the variables

18r-(-9(-2r+1)+3)-6=0



We calculate terms in parentheses: -(-9(-2r+1)+3), so:

-9(-2r+1)+3

We multiply parentheses

18r-9+3

We add all the numbers together, and all the variables

18r-6

Back to the equation:

-(18r-6)



We get rid of parentheses

18r-18r+6-6=0

We add all the numbers together, and all the variables

=0

r=0/1

r=0

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