3i-9-7i-21=8i-12-16i-24

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Solution for 3i-9-7i-21=8i-12-16i-24 equation: 



3i-9-7i-21=8i-12-16i-24

We move all terms to the left:

3i-9-7i-21-(8i-12-16i-24)=0

We add all the numbers together, and all the variables

3i-7i-(-8i-36)-9-21=0

We add all the numbers together, and all the variables

-4i-(-8i-36)-30=0

We get rid of parentheses

-4i+8i+36-30=0

We add all the numbers together, and all the variables

4i+6=0

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

4i=-6

i=-6/4

i=-1+1/2

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