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5(r+3)=2+6
We move all terms to the left:
5(r+3)-(2+6)=0
We add all the numbers together, and all the variables
5(r+3)-8=0
We multiply parentheses
5r+15-8=0
We add all the numbers together, and all the variables
5r+7=0
We move all terms containing r to the left, all other terms to the right
5r=-7
r=-7/5
r=-1+2/5
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