SOLUTION: solving the equation of -9(5+r)=18 check the solution. then simplify

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Question 484523: solving the equation of -9(5+r)=18
check the solution.
then simplify

Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
-45-9r=18
-9r=18+45
-9r=63
r=-7