-9+k+k=-25 - solution

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Solution for -9+k+k=-25 equation:

k in (-oo:+oo)

k+k-9 = -25 // + 25

k+k-9+25 = 0

2*k+16 = 0 // - 16

2*k = -16 // : 2

k = -16/2

k = -8

k = -8

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