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6(r-8)=-84
We move all terms to the left:
6(r-8)-(-84)=0
We add all the numbers together, and all the variables
6(r-8)+84=0
We multiply parentheses
6r-48+84=0
We add all the numbers together, and all the variables
6r+36=0
We move all terms containing r to the left, all other terms to the right
6r=-36
r=-36/6
r=-6
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