20/k=4

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Solution for 20/k=4 equation: 


D( k )

k = 0

k = 0

k = 0

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

20/k = 4 // - 4

20/k-4 = 0

20*k^-1 = 4 // : 20

k^-1 = 1/5

-1 < 0

1/(k^1) = 1/5 // * k^1

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

5 = k^1

k = 5

k = 5

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