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(14040-50x=12500+20x.x)
We move all terms to the left:
(14040-50x-(12500+20x.x))=0
We add all the numbers together, and all the variables
(14040-50x-(20x.x+12500))=0
We calculate terms in parentheses: +(14040-50x-(20x.x+12500)), so:We get rid of parentheses
14040-50x-(20x.x+12500)
determiningTheFunctionDomain -50x-(20x.x+12500)+14040
We get rid of parentheses
-50x-20x.x-12500+14040
We add all the numbers together, and all the variables
-50x-20x.x+1540
Back to the equation:
+(-50x-20x.x+1540)
-50x-20x.x+1540=0
We move all terms containing x to the left, all other terms to the right
-50x-20x.x=-1540
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