SOLUTION: How many different variables are in the expression 8r-1 +9r-2(q-1) +11? Name each variable

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Question 386916: How many different variables are in the expression 8r-1 +9r-2(q-1) +11? Name each variable
Answer by user_dude2008(1862)   (Show Source): You can put this solution on YOUR website!
2 variables: r, q
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