9(r-8)=12r

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Solution for 9(r-8)=12r equation: 



9(r-8)=12r

We move all terms to the left:

9(r-8)-(12r)=0

We add all the numbers together, and all the variables

-12r+9(r-8)=0

We multiply parentheses

-12r+9r-72=0

We add all the numbers together, and all the variables

-3r-72=0

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

-3r=72

r=72/-3

r=-24

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