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-6(r-89)=-18
We move all terms to the left:
-6(r-89)-(-18)=0
We add all the numbers together, and all the variables
-6(r-89)+18=0
We multiply parentheses
-6r+534+18=0
We add all the numbers together, and all the variables
-6r+552=0
We move all terms containing r to the left, all other terms to the right
-6r=-552
r=-552/-6
r=+92
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