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2(r+5)=2r
We move all terms to the left:
2(r+5)-(2r)=0
We add all the numbers together, and all the variables
-2r+2(r+5)=0
We multiply parentheses
-2r+2r+10=0
We add all the numbers together, and all the variables
10!=0
There is no solution for this equation
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