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-4(r-2)-(-8-3r)=8
We move all terms to the left:
-4(r-2)-(-8-3r)-(8)=0
We add all the numbers together, and all the variables
-4(r-2)-(-3r-8)-8=0
We multiply parentheses
-4r-(-3r-8)+8-8=0
We get rid of parentheses
-4r+3r+8+8-8=0
We add all the numbers together, and all the variables
-1r+8=0
We move all terms containing r to the left, all other terms to the right
-r=-8
r=-8/-1
r=+8
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