7-i=-1

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Solution for 7-i=-1 equation: 



7-i=-1

We move all terms to the left:

7-i-(-1)=0

We add all the numbers together, and all the variables

-1i+8=0

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

-i=-8

i=-8/-1

i=+8

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