15/20=18/k

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Solution for 15/20=18/k equation: 


D( k )

k = 0

k = 0

k = 0

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

15/20 = 18/k // - 18/k

15/20-(18/k) = 0

15/20-18*k^-1 = 0

-18*k^-1 = -3/4 // : -18

k^-1 = 1/24

-1 < 0

1/(k^1) = 1/24 // * k^1

1 = 1/24*k^1 // : 1/24

24 = k^1

k = 24

k = 24

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