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-4(r+2)=41
We move all terms to the left:
-4(r+2)-(41)=0
We multiply parentheses
-4r-8-41=0
We add all the numbers together, and all the variables
-4r-49=0
We move all terms containing r to the left, all other terms to the right
-4r=49
r=49/-4
r=-12+1/4
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