SOLUTION: I can substitue everything into the equation but I'm not getting the right answer. What am I doing wrong?

SOLUTION: I can substitue everything into the equation but I'm not getting the right answer. What am I doing wrong?

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Question 255334: I can substitue everything into the equation but I'm not getting the right answer. What am I doing wrong?
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
post the problem
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