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2a+7a-2a-11a+-12a=16
We move all terms to the left:
2a+7a-2a-11a+-12a-(16)=0
determiningTheFunctionDomain 2a+7a-2a-11a-12a-16+=0
We add all the numbers together, and all the variables
-16a=0
a=0/-16
a=0
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