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20+-1.666666667y+y=18
We move all terms to the left:
20+-1.666666667y+y-(18)=0
determiningTheFunctionDomain -1.666666667y+y+20-18+=0
We add all the numbers together, and all the variables
-0.666666667y=0
y=0/-0.666666667
y=0
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