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7(2.5)-2y=18
We move all terms to the left:
7(2.5)-2y-(18)=0
determiningTheFunctionDomain -2y-18+7(2.5)=0
We add all the numbers together, and all the variables
-2y-0.5=0
We move all terms containing y to the left, all other terms to the right
-2y=0.5
y=0.5/-2
y=-0.5/2
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