(-9+15i)-(7-4i)=-i

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Solution for (-9+15i)-(7-4i)=-i equation: 



(-9+15i)-(7-4i)=-i

We move all terms to the left:

(-9+15i)-(7-4i)-(-i)=0

We add all the numbers together, and all the variables

(15i-9)-(-4i+7)-(-1i)=0

We get rid of parentheses

15i+4i+1i-9-7=0

We add all the numbers together, and all the variables

20i-16=0

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

20i=16

i=16/20

i=4/5

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