7i-28=84

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Solution for 7i-28=84 equation: 



7i-28=84

We move all terms to the left:

7i-28-(84)=0

We add all the numbers together, and all the variables

7i-112=0

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

7i=112

i=112/7

i=16

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