12/99=9/k

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Solution for 12/99=9/k equation: 


D( k )

k = 0

k = 0

k = 0

k in (-oo:0) U (0:+oo)

12/99 = 9/k // - 9/k

12/99-(9/k) = 0

12/99-9*k^-1 = 0

-9*k^-1 = -4/33 // : -9

k^-1 = 4/297

-1 < 0

1/(k^1) = 4/297 // * k^1

1 = 4/297*k^1 // : 4/297

297/4 = k^1

k = 297/4

k = 297/4

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