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-9(8+5r)=34
We move all terms to the left:
-9(8+5r)-(34)=0
We add all the numbers together, and all the variables
-9(5r+8)-34=0
We multiply parentheses
-45r-72-34=0
We add all the numbers together, and all the variables
-45r-106=0
We move all terms containing r to the left, all other terms to the right
-45r=106
r=106/-45
r=-2+16/45
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