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(-13)-f/5=12
We move all terms to the left:
(-13)-f/5-(12)=0
determiningTheFunctionDomain -f/5-12+(-13)=0
We add all the numbers together, and all the variables
-f/5-25=0
We multiply all the terms by the denominator
-f-25*5=0
We add all the numbers together, and all the variables
-1f-125=0
We move all terms containing f to the left, all other terms to the right
-f=125
f=125/-1
f=-125
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