SOLUTION: Can someone show me how to write the rational expression in lowest terms? r-13/13-r

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Question 76829: Can someone show me how to write the rational expression in lowest terms?
r-13/13-r
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
write the rational expression in lowest terms?
r-13/13-r
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13-t is the negative of r-13
So you can rewrite your problem as:
(r-13)/-(r-13)
Then cancel the common factor to get:
1/-1 = -1
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Cheers,
Stan H.