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-2p+-9p+7p+p-4=13
We move all terms to the left:
-2p+-9p+7p+p-4-(13)=0
determiningTheFunctionDomain -2p-9p+7p+p-4-13+=0
We add all the numbers together, and all the variables
-3p=0
p=0/-3
p=0
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