30+-f+8f=30

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Solution for 30+-f+8f=30 equation: 



30+-f+8f=30

We move all terms to the left:

30+-f+8f-(30)=0

determiningTheFunctionDomain
-f+8f+30-30+=0

We add all the numbers together, and all the variables

7f=0

f=0/7

f=0

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