-2k-5=-21

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Solution for -2k-5=-21 equation: 


k in (-oo:+oo)

-2*k-5 = -21 // + 21

21-2*k-5 = 0

16-2*k = 0 // - 16

-2*k = -16 // : -2

k = -16/(-2)

k = 8

k = 8

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