90/k=-5

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Solution for 90/k=-5 equation: 


D( k )

k = 0

k = 0

k = 0

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

90/k = -5 // + 5

90/k+5 = 0

90*k^-1 = -5 // : 90

k^-1 = -1/18

-1 < 0

1/(k^1) = -1/18 // * k^1

1 = -1/18*k^1 // : -1/18

-18 = k^1

k = -18

k = -18

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