7/(8-9i)

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Solution for 7/(8-9i) equation: 


D( i )

8-(9*i) = 0

8-(9*i) = 0

8-(9*i) = 0

8-9*i = 0

8-9*i = 0 // - 8

-9*i = -8 // : -9

i = -8/(-9)

i = 8/9

i in (-oo:8/9) U (8/9:+oo)

7/(8-(9*i)) = 0

7/(8-9*i) = 0

7 = 0

i belongs to the empty set

i belongs to the empty set

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