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3(-4)-y=3
We move all terms to the left:
3(-4)-y-(3)=0
determiningTheFunctionDomain -y-3+3(-4)=0
We add all the numbers together, and all the variables
-1y-15=0
We move all terms containing y to the left, all other terms to the right
-y=15
y=15/-1
y=-15
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