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9c-(-3)=66
We move all terms to the left:
9c-(-3)-(66)=0
determiningTheFunctionDomain 9c-66-(-3)=0
We add all the numbers together, and all the variables
9c-63=0
We move all terms containing c to the left, all other terms to the right
9c=63
c=63/9
c=7
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