1+3i/2+9i - solution

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Solution for 1+3i/2+9i equation:

i in (-oo:+oo)

(3*i)/2+9*i+1 = 0

21/2*i+1 = 0 // - 1

21/2*i = -1 // : 21/2

i = -1/21/2

i = -2/21

i = -2/21

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