7i+-28=-70

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Solution for 7i+-28=-70 equation: 



7i+-28=-70

We move all terms to the left:

7i+-28-(-70)=0

We add all the numbers together, and all the variables

7i+42=0

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

7i=-42

i=-42/7

i=-6

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