-1-5k=-21

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Solution for -1-5k=-21 equation: 


k in (-oo:+oo)

-(5*k)-1 = -21 // + 21

21-(5*k)-1 = 0

21-5*k-1 = 0

20-5*k = 0 // - 20

-5*k = -20 // : -5

k = -20/(-5)

k = 4

k = 4

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