SOLUTION: Which expression below is a variable expression?

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Question 1012385: Which expression below is a variable expression?

Found 2 solutions by fractalier, Shin123:
Answer by fractalier(6550)   (Show Source): You can put this solution on YOUR website!
Please resubmit with the choices and someone will help you.
Answer by Shin123(626)   (Show Source): You can put this solution on YOUR website!
Where are the choices?
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