4/9=8/k

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Solution for 4/9=8/k equation: 


D( k )

k = 0

k = 0

k = 0

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

4/9 = 8/k // - 8/k

4/9-(8/k) = 0

4/9-8*k^-1 = 0

-8*k^-1 = -4/9 // : -8

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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