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-5(r+8)=-28
We move all terms to the left:
-5(r+8)-(-28)=0
We add all the numbers together, and all the variables
-5(r+8)+28=0
We multiply parentheses
-5r-40+28=0
We add all the numbers together, and all the variables
-5r-12=0
We move all terms containing r to the left, all other terms to the right
-5r=12
r=12/-5
r=-2+2/5
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