(15/k+5)=4(-3k/k+5)

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Solution for (15/k+5)=4(-3k/k+5) equation: 


D( k )

k = 0

k = 0

k = 0

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

15/k+5 = 4*((-3*k)/k+5) // - 4*((-3*k)/k+5)

15/k-(4*((-3*k)/k+5))+5 = 0

15/k-4*((-3*k)/k+5)+5 = 0

15/k-4*2+5 = 0

15/k+(-4*2*k)/k+(5*k)/k = 0

5*k-4*2*k+15 = 0

5*k-8*k+15 = 0

15-3*k = 0

(15-3*k)/k = 0

(15-3*k)/k = 0 // * k

15-3*k = 0

15-3*k = 0 // - 15

-3*k = -15 // : -3

k = -15/(-3)

k = 5

k = 5

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