-2k+3=-21

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Solution for -2k+3=-21 equation: 


k in (-oo:+oo)

3-2*k = -21 // + 21

3-2*k+21 = 0

24-2*k = 0 // - 24

-2*k = -24 // : -2

k = -24/(-2)

k = 12

k = 12

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