(2/k)-1=4

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Solution for (2/k)-1=4 equation: 


D( k )

k = 0

k = 0

k = 0

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

2/k-1 = 4 // - 4

2/k-4-1 = 0

2*k^-1 = 5 // : 2

k^-1 = 5/2

-1 < 0

1/(k^1) = 5/2 // * k^1

1 = 5/2*k^1 // : 5/2

2/5 = k^1

k = 2/5

k = 2/5

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