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50+199=399(x)
We move all terms to the left:
50+199-(399(x))=0
determiningTheFunctionDomain -399x+50+199=0
We add all the numbers together, and all the variables
-399x+249=0
We move all terms containing x to the left, all other terms to the right
-399x=-249
x=-249/-399
x=83/133
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