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6^12-3x=216
We move all terms to the left:
6^12-3x-(216)=0
determiningTheFunctionDomain -3x-216+6^12=0
We add all the numbers together, and all the variables
-3x+2176782120=0
We move all terms containing x to the left, all other terms to the right
-3x=-2176782120
x=-2176782120/-3
x=+725594040
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