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X-66=4(X)
We move all terms to the left:
X-66-(4(X))=0
determiningTheFunctionDomain X-4X-66=0
We add all the numbers together, and all the variables
-3X-66=0
We move all terms containing X to the left, all other terms to the right
-3X=66
X=66/-3
X=-22
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