i+(-30)=9

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Solution for i+(-30)=9 equation: 



i+(-30)=9

We move all terms to the left:

i+(-30)-(9)=0

determiningTheFunctionDomain
i-9+(-30)=0

We add all the numbers together, and all the variables

i-39=0

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

i=39

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