-k+9=-2k+15

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Solution for -k+9=-2k+15 equation:


k in (-oo:+oo)

9-k = 15-2*k // - 15-2*k

9-k-(-2*k)-15 = 0

2*k-k-15+9 = 0

k-6 = 0 // + 6

k = 6

k = 6

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