-k-9=4k-4

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Solution for -k-9=4k-4 equation: 


k in (-oo:+oo)

-k-9 = 4*k-4 // - 4*k-4

4-k-(4*k)-9 = 0

4-k-4*k-9 = 0

-5*k-5 = 0 // + 5

-5*k = 5 // : -5

k = 5/(-5)

k = -1

k = -1

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