4/5=3/k

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Solution for 4/5=3/k equation: 


D( k )

k = 0

k = 0

k = 0

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

4/5 = 3/k // - 3/k

4/5-(3/k) = 0

4/5-3*k^-1 = 0

-3*k^-1 = -4/5 // : -3

k^-1 = 4/15

-1 < 0

1/(k^1) = 4/15 // * k^1

1 = 4/15*k^1 // : 4/15

15/4 = k^1

k = 15/4

k = 15/4

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