f-(+12)=30

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Solution for f-(+12)=30 equation: 



f-(+12)=30

We move all terms to the left:

f-(+12)-(30)=0

determiningTheFunctionDomain
f-30-(+12)=0

We add all the numbers together, and all the variables

f-30-12=0

We add all the numbers together, and all the variables

f-42=0

We move all terms containing f to the left, all other terms to the right

f=42

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