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8=2r+1/3
We move all terms to the left:
8-(2r+1/3)=0
We add all the numbers together, and all the variables
-(+2r+1/3)+8=0
We get rid of parentheses
-2r+8-1/3=0
We multiply all the terms by the denominator
-2r*3-1+8*3=0
We add all the numbers together, and all the variables
-2r*3+23=0
Wy multiply elements
-6r+23=0
We move all terms containing r to the left, all other terms to the right
-6r=-23
r=-23/-6
r=3+5/6
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