-3(r-8)=-57-12r

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Solution for -3(r-8)=-57-12r equation: 



-3(r-8)=-57-12r

We move all terms to the left:

-3(r-8)-(-57-12r)=0

We add all the numbers together, and all the variables

-3(r-8)-(-12r-57)=0

We multiply parentheses

-3r-(-12r-57)+24=0

We get rid of parentheses

-3r+12r+57+24=0

We add all the numbers together, and all the variables

9r+81=0

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

9r=-81

r=-81/9

r=-9

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