SOLUTION: can you solve 9-r=r+1 thanks!!

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Question 54742: can you solve 9-r=r+1 thanks!!
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
9-R=R+1
9-1=R+R
8=2R
R=8/2
R=4
PROOF
9-4=4+1
5=5