-4+2k=-20 - solution

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Solution for -4+2k=-20 equation:

k in (-oo:+oo)

2*k-4 = -20 // + 20

2*k-4+20 = 0

2*k+16 = 0 // - 16

2*k = -16 // : 2

k = -16/2

k = -8

k = -8

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