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f+28/9=4
We move all terms to the left:
f+28/9-(4)=0
determiningTheFunctionDomain f-4+28/9=0
We multiply all the terms by the denominator
f*9+28-4*9=0
We add all the numbers together, and all the variables
f*9-8=0
Wy multiply elements
9f-8=0
We move all terms containing f to the left, all other terms to the right
9f=8
f=8/9
f=8/9
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