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12x-15=3(4x)
We move all terms to the left:
12x-15-(3(4x))=0
determiningTheFunctionDomain 12x-34x-15=0
We add all the numbers together, and all the variables
-22x-15=0
We move all terms containing x to the left, all other terms to the right
-22x=15
x=15/-22
x=-15/22
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